38936538 has 20 divisors (see below), whose sum is σ = 87247050. Its totient is φ = 12978792.

The previous prime is 38936533. The next prime is 38936563. The reversal of 38936538 is 83563983.

38936538 is a `hidden beast` number, since 3 + 89 + 36 + 538 = 666.

It can be written as a sum of positive squares in only one way, i.e., 34539129 + 4397409 = 5877^2 + 2097^2 .

It is a junction number, because it is equal to n+sod(n) for n = 38936493 and 38936502.

It is not an unprimeable number, because it can be changed into a prime (38936533) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 120013 + ... + 120336.

Almost surely, 2^38936538 is an apocalyptic number.

38936538 is an abundant number, since it is smaller than the sum of its proper divisors (48310512).

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

38936538 is a wasteful number, since it uses less digits than its factorization.

38936538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240363 (or 240354 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 38936538 is about 6239.9149032659. The cubic root of 38936538 is about 338.9371016518.

It can be divided in two parts, 389365 and 38, that added together give a triangular number (389403 = T₈₈₂).

The spelling of 38936538 in words is "thirty-eight million, nine hundred thirty-six thousand, five hundred thirty-eight".