38531664 has 30 divisors (see below), whose sum is σ = 107835546. Its totient is φ = 12843840.

The previous prime is 38531653. The next prime is 38531699. The reversal of 38531664 is 46613583.

It can be written as a sum of positive squares in only one way, i.e., 22467600 + 16064064 = 4740^2 + 4008^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 133647 + ... + 133934.

Almost surely, 2^38531664 is an apocalyptic number.

It is an amenable number.

38531664 is an abundant number, since it is smaller than the sum of its proper divisors (69303882).

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

38531664 is a wasteful number, since it uses less digits than its factorization.

38531664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267595 (or 267586 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 38531664 is about 6207.3878564175. The cubic root of 38531664 is about 337.7582155620.

The spelling of 38531664 in words is "thirty-eight million, five hundred thirty-one thousand, six hundred sixty-four".