12157716 has 12 divisors (see below), whose sum is σ = 28368032. Its totient is φ = 4052568.

The previous prime is 12157711. The next prime is 12157721. The reversal of 12157716 is 61775121.

It is an interprime number because it is at equal distance from previous prime (12157711) and next prime (12157721).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12157711) 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, 506560 + ... + 506583.

Almost surely, 2^12157716 is an apocalyptic number.

It is an amenable number.

12157716 is an abundant number, since it is smaller than the sum of its proper divisors (16210316).

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

12157716 is a wasteful number, since it uses less digits than its factorization.

12157716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1013150 (or 1013148 counting only the distinct ones).

The product of its digits is 2940, while the sum is 30.

The square root of 12157716 is about 3486.7916484929. The cubic root of 12157716 is about 229.9414847991.

The spelling of 12157716 in words is "twelve million, one hundred fifty-seven thousand, seven hundred sixteen".