3157228 has 12 divisors (see below), whose sum is σ = 5603472. Its totient is φ = 1556240.

The previous prime is 3157213. The next prime is 3157229. The reversal of 3157228 is 8227513.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 3157196 and 3157205.

It is not an unprimeable number, because it can be changed into a prime (3157229) 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, 5275 + ... + 5842.

It is an arithmetic number, because the mean of its divisors is an integer number (466956).

Almost surely, 2^3157228 is an apocalyptic number.

It is an amenable number.

3157228 is a deficient number, since it is larger than the sum of its proper divisors (2446244).

3157228 is a wasteful number, since it uses less digits than its factorization.

3157228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11192 (or 11190 counting only the distinct ones).

The product of its digits is 3360, while the sum is 28.

The square root of 3157228 is about 1776.8590264847. The cubic root of 3157228 is about 146.7017569850.

The spelling of 3157228 in words is "three million, one hundred fifty-seven thousand, two hundred twenty-eight".