38978736 has 20 divisors (see below), whose sum is σ = 100695192. Its totient is φ = 12992896.

The previous prime is 38978701. The next prime is 38978759. The reversal of 38978736 is 63787983.

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, 405981 + ... + 406076.

Almost surely, 2^38978736 is an apocalyptic number.

It is an amenable number.

38978736 is an abundant number, since it is smaller than the sum of its proper divisors (61716456).

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

38978736 is a wasteful number, since it uses less digits than its factorization.

38978736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812068 (or 812062 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 51.

The square root of 38978736 is about 6243.2952837424. The cubic root of 38978736 is about 339.0595000025.

The spelling of 38978736 in words is "thirty-eight million, nine hundred seventy-eight thousand, seven hundred thirty-six".