38904970 has 48 divisors (see below), whose sum is σ = 79689960. Its totient is φ = 13592448.

The previous prime is 38904953. The next prime is 38904973. The reversal of 38904970 is 7940983.

It can be written as a sum of positive squares in 4 ways, for example, as 25735329 + 13169641 = 5073^2 + 3629^2 .

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (38904973) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46516 + ... + 47344.

Almost surely, 2^38904970 is an apocalyptic number.

38904970 is an abundant number, since it is smaller than the sum of its proper divisors (40784990).

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

38904970 is a wasteful number, since it uses less digits than its factorization.

38904970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887 (or 868 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 38904970 is about 6237.3848686769. The cubic root of 38904970 is about 338.8454785488.

The spelling of 38904970 in words is "thirty-eight million, nine hundred four thousand, nine hundred seventy".