38909056 has 32 divisors (see below), whose sum is σ = 82078380. Its totient is φ = 18309120.

The previous prime is 38909021. The next prime is 38909069. The reversal of 38909056 is 65090983.

It can be written as a sum of positive squares in 2 ways, for example, as 38638656 + 270400 = 6216^2 + 520^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×38909056² = 3027829277622272, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

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, 6765 + ... + 11116.

Almost surely, 2^38909056 is an apocalyptic number.

It is an amenable number.

38909056 is an abundant number, since it is smaller than the sum of its proper divisors (43169324).

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

38909056 is a wasteful number, since it uses less digits than its factorization.

38909056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17912 (or 17900 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 38909056 is about 6237.7124011932. The cubic root of 38909056 is about 338.8573405650.

The spelling of 38909056 in words is "thirty-eight million, nine hundred nine thousand, fifty-six".