Number of the day: 253568

Properties of the number 253568:

253568 = 2⁷ × 7 × 283 is the 231246^th composite number and is not squarefree.
253568 has 3 distinct prime factors, 32 divisors, 9 antidivisors and 108288 totatives.
253568 has a prime digit sum 29 in base 10.
253568 is the difference of 2 nonnegative squares in 12 ways.
253568 is the sum of 2 positive triangular numbers.
253568 = 32² + 120² + 488² is the sum of 3 positive squares.
253568² is the sum of 3 positive squares.
253568 is a proper divisor of 1087⁶ - 1.
253568 is palindromic in (at least) base 81.

The number 253568 belongs to the following On-Line Encyclopedia of Integer Sequences (OEIS) sequences (among others):

Sequence numbers and descriptions below are taken from OEIS.
A041518: Numerators of continued fraction convergents to sqrt(276).
A252760: Number of moduli m such that the multiplicative order of n mod m equals n.