38720031880 has 32 divisors (see below), whose sum is σ = 87576215040. Its totient is φ = 15406920640.

The previous prime is 38720031859. The next prime is 38720031901. The reversal of 38720031880 is 8813002783.

It is an interprime number because it is at equal distance from previous prime (38720031859) and next prime (38720031901).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2526394 + ... + 2541673.

It is an arithmetic number, because the mean of its divisors is an integer number (2736756720).

Almost surely, 2^38720031880 is an apocalyptic number.

It is an amenable number.

38720031880 is an abundant number, since it is smaller than the sum of its proper divisors (48856183160).

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

38720031880 is a wasteful number, since it uses less digits than its factorization.

38720031880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5068269 (or 5068265 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The spelling of 38720031880 in words is "thirty-eight billion, seven hundred twenty million, thirty-one thousand, eight hundred eighty".