38157564 has 12 divisors (see below), whose sum is σ = 89034344. Its totient is φ = 12719184.

The previous prime is 38157563. The next prime is 38157577. The reversal of 38157564 is 46575183.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38157563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1589887 + ... + 1589910.

Almost surely, 2^38157564 is an apocalyptic number.

It is an amenable number.

38157564 is an abundant number, since it is smaller than the sum of its proper divisors (50876780).

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

38157564 is a wasteful number, since it uses less digits than its factorization.

38157564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3179804 (or 3179802 counting only the distinct ones).

The product of its digits is 100800, while the sum is 39.

The square root of 38157564 is about 6177.1809104154. The cubic root of 38157564 is about 336.6615720999.

The spelling of 38157564 in words is "thirty-eight million, one hundred fifty-seven thousand, five hundred sixty-four".