38720624 has 20 divisors (see below), whose sum is σ = 75404400. Its totient is φ = 19261440.

The previous prime is 38720623. The next prime is 38720641. The reversal of 38720624 is 42602783.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38720623) 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, 2897 + ... + 9264.

It is an arithmetic number, because the mean of its divisors is an integer number (3770220).

Almost surely, 2^38720624 is an apocalyptic number.

It is an amenable number.

38720624 is a deficient number, since it is larger than the sum of its proper divisors (36683776).

38720624 is a wasteful number, since it uses less digits than its factorization.

38720624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12368 (or 12362 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 38720624 is about 6222.5898145386. The cubic root of 38720624 is about 338.3094396698.

The spelling of 38720624 in words is "thirty-eight million, seven hundred twenty thousand, six hundred twenty-four".