37989720 has 48 divisors (see below), whose sum is σ = 123467760. Its totient is φ = 10130496.

The previous prime is 37989703. The next prime is 37989733. The reversal of 37989720 is 2798973.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52404 + ... + 53123.

It is an arithmetic number, because the mean of its divisors is an integer number (2572245).

Almost surely, 2^37989720 is an apocalyptic number.

37989720 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

37989720 is an abundant number, since it is smaller than the sum of its proper divisors (85478040).

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

37989720 is a wasteful number, since it uses less digits than its factorization.

37989720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105544 (or 105537 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The square root of 37989720 is about 6163.5801284643. The cubic root of 37989720 is about 336.1672211850.

The spelling of 37989720 in words is "thirty-seven million, nine hundred eighty-nine thousand, seven hundred twenty".