Number of the day: 749736

Properties of the number 749736:

749736 = 2³ × 3⁴ × 13 × 89 is the 689518^th composite number and is not squarefree.
749736 has 4 distinct prime factors, 80 divisors, 21 antidivisors and 228096 totatives.
749736 has a triangular digit sum 36 in base 10.
749736 is the difference of 2 nonnegative squares in 20 ways.
749736 is the sum of 2 positive triangular numbers.
749736 is the difference of 2 positive pentagonal numbers in 1 way.
749736 = 594² + 630² = 306² + 810² is the sum of 2 positive squares in 2 ways.
749736 = 56² + 194² + 842² is the sum of 3 positive squares.
749736² = 328536² + 673920² = 44064² + 748440² = 495720² + 562464² = 288360² + 692064² is the sum of 2 positive squares in 4 ways.
749736² is the sum of 3 positive squares.
749736 is a proper divisor of 179¹⁸ - 1.
749736 in base 34 = j2j2 and consists of only the digits '2' and 'j'.
749736 in base 35 = hh11 and consists of only the digits '1' and 'h'.

The number 749736 belongs to the following On-Line Encyclopedia of Integer Sequences (OEIS) sequence (among others):

Sequence number and description below are taken from OEIS.
A157377: a(n) = 531441*n - 313146.