38538520 has 32 divisors (see below), whose sum is σ = 87207120. Its totient is φ = 15327360.

The previous prime is 38538509. The next prime is 38538523. The reversal of 38538520 is 2583583.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38538523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4579 + ... + 9901.

Almost surely, 2^38538520 is an apocalyptic number.

It is an amenable number.

38538520 is an abundant number, since it is smaller than the sum of its proper divisors (48668600).

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

38538520 is a wasteful number, since it uses less digits than its factorization.

38538520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5515 (or 5511 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 38538520 is about 6207.9400770304. The cubic root of 38538520 is about 337.7782469920.

The spelling of 38538520 in words is "thirty-eight million, five hundred thirty-eight thousand, five hundred twenty".