37989244728 has 128 divisors (see below), whose sum is σ = 108583084800. Its totient is φ = 12297495168.

The previous prime is 37989244703. The next prime is 37989244747. The reversal of 37989244728 is 82744298973.

37989244728 is a `hidden beast` number, since 3 + 79 + 8 + 92 + 4 + 472 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4495275 + ... + 4503717.

It is an arithmetic number, because the mean of its divisors is an integer number (848305350).

Almost surely, 2^37989244728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 37989244728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54291542400).

37989244728 is an abundant number, since it is smaller than the sum of its proper divisors (70593840072).

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

37989244728 is a wasteful number, since it uses less digits than its factorization.

37989244728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9058 (or 9048 counting only the distinct ones).

The product of its digits is 48771072, while the sum is 63.

The spelling of 37989244728 in words is "thirty-seven billion, nine hundred eighty-nine million, two hundred forty-four thousand, seven hundred twenty-eight".