3157872 has 20 divisors (see below), whose sum is σ = 8157960. Its totient is φ = 1052608.

The previous prime is 3157859. The next prime is 3157873. The reversal of 3157872 is 2787513.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3157873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32847 + ... + 32942.

It is an arithmetic number, because the mean of its divisors is an integer number (407898).

Almost surely, 2^3157872 is an apocalyptic number.

It is an amenable number.

3157872 is an abundant number, since it is smaller than the sum of its proper divisors (5000088).

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

3157872 is a wasteful number, since it uses less digits than its factorization.

3157872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65800 (or 65794 counting only the distinct ones).

The product of its digits is 11760, while the sum is 33.

The square root of 3157872 is about 1777.0402358979. The cubic root of 3157872 is about 146.7117308723.

The spelling of 3157872 in words is "three million, one hundred fifty-seven thousand, eight hundred seventy-two".