38820864 has 44 divisors (see below), whose sum is σ = 103479944. Its totient is φ = 12939264.

The previous prime is 38820853. The next prime is 38820869. The reversal of 38820864 is 46802883.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38820869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3247 + ... + 9390.

Almost surely, 2^38820864 is an apocalyptic number.

It is an amenable number.

38820864 is an abundant number, since it is smaller than the sum of its proper divisors (64659080).

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

38820864 is a wasteful number, since it uses less digits than its factorization.

38820864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12660 (or 12642 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 39.

The square root of 38820864 is about 6230.6391325449. The cubic root of 38820864 is about 338.6011267418.

The spelling of 38820864 in words is "thirty-eight million, eight hundred twenty thousand, eight hundred sixty-four".