3137239728 has 80 divisors (see below), whose sum is σ = 10291484160. Its totient is φ = 896353344.

The previous prime is 3137239723. The next prime is 3137239733. The reversal of 3137239728 is 8279327313.

It is an interprime number because it is at equal distance from previous prime (3137239723) and next prime (3137239733).

It is a super-2 number, since 2×3137239728² = 19684546221883027968, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (3137239723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 515700 + ... + 521747.

It is an arithmetic number, because the mean of its divisors is an integer number (128643552).

Almost surely, 2^3137239728 is an apocalyptic number.

It is an amenable number.

3137239728 is an abundant number, since it is smaller than the sum of its proper divisors (7154244432).

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

3137239728 is a wasteful number, since it uses less digits than its factorization.

3137239728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1037471 (or 1037459 counting only the distinct ones).

The product of its digits is 381024, while the sum is 45.

The square root of 3137239728 is about 56011.0679062630. The cubic root of 3137239728 is about 1463.9151388597.

The spelling of 3137239728 in words is "three billion, one hundred thirty-seven million, two hundred thirty-nine thousand, seven hundred twenty-eight".