38012720 has 20 divisors (see below), whose sum is σ = 88379760. Its totient is φ = 15205056.

The previous prime is 38012719. The next prime is 38012773. The reversal of 38012720 is 2721083.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 237500 + ... + 237659.

It is an arithmetic number, because the mean of its divisors is an integer number (4418988).

Almost surely, 2^38012720 is an apocalyptic number.

It is an amenable number.

38012720 is an abundant number, since it is smaller than the sum of its proper divisors (50367040).

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

38012720 is a wasteful number, since it uses less digits than its factorization.

38012720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475172 (or 475166 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 38012720 is about 6165.4456448825. The cubic root of 38012720 is about 336.2350490628.

The spelling of 38012720 in words is "thirty-eight million, twelve thousand, seven hundred twenty".