38907072 has 42 divisors (see below), whose sum is σ = 111521748. Its totient is φ = 12968832.

The previous prime is 38907061. The next prime is 38907107. The reversal of 38907072 is 27070983.

It is a super-2 number, since 2×38907072² = 3027520503226368, which contains 22 as substring.

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

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 5 ways as a sum of consecutive naturals, for example, 33198 + ... + 34349.

Almost surely, 2^38907072 is an apocalyptic number.

38907072 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

38907072 is an abundant number, since it is smaller than the sum of its proper divisors (72614676).

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

38907072 is a wasteful number, since it uses less digits than its factorization.

38907072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67565 (or 67552 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 38907072 is about 6237.5533665052. The cubic root of 38907072 is about 338.8515809428.

The spelling of 38907072 in words is "thirty-eight million, nine hundred seven thousand, seventy-two".