3157132720 has 360 divisors, whose sum is σ = 9500579424. Its totient is φ = 970776576.

The previous prime is 3157132709. The next prime is 3157132723. The reversal of 3157132720 is 272317513.

It is not an unprimeable number, because it can be changed into a prime (3157132723) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 32547712 + ... + 32547808.

Almost surely, 2^3157132720 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 3157132720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4750289712).

3157132720 is an abundant number, since it is smaller than the sum of its proper divisors (6343446704).

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

3157132720 is a wasteful number, since it uses less digits than its factorization.

3157132720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185 (or 153 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 31.

The square root of 3157132720 is about 56188.3681912903. The cubic root of 3157132720 is about 1467.0028123009.

The spelling of 3157132720 in words is "three billion, one hundred fifty-seven million, one hundred thirty-two thousand, seven hundred twenty".