90057872 has 20 divisors (see below), whose sum is σ = 183671280. Its totient is φ = 42658848.

The previous prime is 90057841. The next prime is 90057893. The reversal of 90057872 is 27875009.

It is a super-2 number, since 2×90057872² = 16220840618336768, which contains 22 as substring.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147818 + ... + 148425.

It is an arithmetic number, because the mean of its divisors is an integer number (9183564).

Almost surely, 2^90057872 is an apocalyptic number.

It is an amenable number.

90057872 is an abundant number, since it is smaller than the sum of its proper divisors (93613408).

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

90057872 is a wasteful number, since it uses less digits than its factorization.

90057872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296270 (or 296264 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 38.

The square root of 90057872 is about 9489.8826125511. The cubic root of 90057872 is about 448.2365088359.

The spelling of 90057872 in words is "ninety million, fifty-seven thousand, eight hundred seventy-two".