38871864 has 48 divisors (see below), whose sum is σ = 105846000. Its totient is φ = 12887424.

The previous prime is 38871797. The next prime is 38871869. The reversal of 38871864 is 46817883.

It is a super-2 number, since 2×38871864² = 3022043621668992, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38871869) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12972 + ... + 15684.

It is an arithmetic number, because the mean of its divisors is an integer number (2205125).

Almost surely, 2^38871864 is an apocalyptic number.

It is an amenable number.

38871864 is an abundant number, since it is smaller than the sum of its proper divisors (66974136).

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

38871864 is a wasteful number, since it uses less digits than its factorization.

38871864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2924 (or 2917 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 38871864 is about 6234.7304673097. The cubic root of 38871864 is about 338.7493382884.

The spelling of 38871864 in words is "thirty-eight million, eight hundred seventy-one thousand, eight hundred sixty-four".