38731404 has 12 divisors (see below), whose sum is σ = 90373304. Its totient is φ = 12910464.

The previous prime is 38731397. The next prime is 38731439. The reversal of 38731404 is 40413783.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×38731404² = 3000243311622432, which contains 22 as substring.

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, 1613797 + ... + 1613820.

Almost surely, 2^38731404 is an apocalyptic number.

It is an amenable number.

38731404 is an abundant number, since it is smaller than the sum of its proper divisors (51641900).

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

38731404 is a wasteful number, since it uses less digits than its factorization.

38731404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3227624 (or 3227622 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 38731404 is about 6223.4559530859. The cubic root of 38731404 is about 338.3408323919.

The spelling of 38731404 in words is "thirty-eight million, seven hundred thirty-one thousand, four hundred four".