108644256 has 72 divisors (see below), whose sum is σ = 353100384. Its totient is φ = 31040640.

The previous prime is 108644231. The next prime is 108644257. The reversal of 108644256 is 652446801.

108644256 is a `hidden beast` number, since 1 + 0 + 8 + 644 + 2 + 5 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 108644256.

It is not an unprimeable number, because it can be changed into a prime (108644257) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24930 + ... + 28961.

It is an arithmetic number, because the mean of its divisors is an integer number (4904172).

Almost surely, 2^108644256 is an apocalyptic number.

108644256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

108644256 is an abundant number, since it is smaller than the sum of its proper divisors (244456128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

108644256 is a wasteful number, since it uses less digits than its factorization.

108644256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53914 (or 53903 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 108644256 is about 10423.2555374988. The cubic root of 108644256 is about 477.1653765139.

It can be divided in two parts, 108644 and 256, that added together give a square (108900 = 330²).

The spelling of 108644256 in words is "one hundred eight million, six hundred forty-four thousand, two hundred fifty-six".