38155680 has 72 divisors (see below), whose sum is σ = 130211172. Its totient is φ = 10174464.

The previous prime is 38155661. The next prime is 38155697. The reversal of 38155680 is 8655183.

It can be written as a sum of positive squares in 2 ways, for example, as 37015056 + 1140624 = 6084^2 + 1068^2 .

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 an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11809 + ... + 14688.

Almost surely, 2^38155680 is an apocalyptic number.

38155680 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38155680 is an abundant number, since it is smaller than the sum of its proper divisors (92055492).

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

38155680 is a wasteful number, since it uses less digits than its factorization.

38155680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26518 (or 26507 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 38155680 is about 6177.0284117851. The cubic root of 38155680 is about 336.6560312078.

The spelling of 38155680 in words is "thirty-eight million, one hundred fifty-five thousand, six hundred eighty".