38878720 has 40 divisors (see below), whose sum is σ = 93223944. Its totient is φ = 15550464.

The previous prime is 38878687. The next prime is 38878727. The reversal of 38878720 is 2787883.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38878727) 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, 5034 + ... + 10153.

Almost surely, 2^38878720 is an apocalyptic number.

It is an amenable number.

38878720 is an abundant number, since it is smaller than the sum of its proper divisors (54345224).

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

38878720 is an equidigital number, since it uses as much as digits as its factorization.

38878720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15210 (or 15194 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 43.

The square root of 38878720 is about 6235.2802663553. The cubic root of 38878720 is about 338.7692526832.

The spelling of 38878720 in words is "thirty-eight million, eight hundred seventy-eight thousand, seven hundred twenty".