3157994 has 16 divisors (see below), whose sum is σ = 5446656. Its totient is φ = 1345200.

The previous prime is 3157993. The next prime is 3158033. The reversal of 3157994 is 4997513.

It is a happy number.

It is a super-2 number, since 2×3157994² = 19945852208072, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3157991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2084 + ... + 3264.

It is an arithmetic number, because the mean of its divisors is an integer number (340416).

Almost surely, 2^3157994 is an apocalyptic number.

3157994 is a deficient number, since it is larger than the sum of its proper divisors (2288662).

3157994 is a wasteful number, since it uses less digits than its factorization.

3157994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1381.

The product of its digits is 34020, while the sum is 38.

The square root of 3157994 is about 1777.0745623074. The cubic root of 3157994 is about 146.7136201826.

The spelling of 3157994 in words is "three million, one hundred fifty-seven thousand, nine hundred ninety-four".