3157428 has 12 divisors (see below), whose sum is σ = 7367360. Its totient is φ = 1052472.

The previous prime is 3157411. The next prime is 3157471. The reversal of 3157428 is 8247513.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 3157395 and 3157404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131548 + ... + 131571.

Almost surely, 2^3157428 is an apocalyptic number.

It is an amenable number.

3157428 is an abundant number, since it is smaller than the sum of its proper divisors (4209932).

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

3157428 is a wasteful number, since it uses less digits than its factorization.

3157428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263126 (or 263124 counting only the distinct ones).

The product of its digits is 6720, while the sum is 30.

The square root of 3157428 is about 1776.9153046783. The cubic root of 3157428 is about 146.7048546107.

The spelling of 3157428 in words is "three million, one hundred fifty-seven thousand, four hundred twenty-eight".