2157412 has 12 divisors (see below), whose sum is σ = 3974320. Its totient is φ = 1021896.

The previous prime is 2157401. The next prime is 2157413. The reversal of 2157412 is 2147512.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2157413) 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, 14118 + ... + 14269.

2^2157412 is an apocalyptic number.

It is an amenable number.

2157412 is a deficient number, since it is larger than the sum of its proper divisors (1816908).

2157412 is a wasteful number, since it uses less digits than its factorization.

2157412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28410 (or 28408 counting only the distinct ones).

The product of its digits is 560, while the sum is 22.

The square root of 2157412 is about 1468.8131263030. The cubic root of 2157412 is about 129.2144341307.

The spelling of 2157412 in words is "two million, one hundred fifty-seven thousand, four hundred twelve".