12158516 has 12 divisors (see below), whose sum is σ = 21323232. Its totient is φ = 6066168.

The previous prime is 12158507. The next prime is 12158521. The reversal of 12158516 is 61585121.

It is a super-2 number, since 2×12158516² = 295659022644512, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1010 + ... + 5033.

It is an arithmetic number, because the mean of its divisors is an integer number (1776936).

Almost surely, 2^12158516 is an apocalyptic number.

It is an amenable number.

12158516 is a deficient number, since it is larger than the sum of its proper divisors (9164716).

12158516 is a wasteful number, since it uses less digits than its factorization.

12158516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6550 (or 6548 counting only the distinct ones).

The product of its digits is 2400, while the sum is 29.

The square root of 12158516 is about 3486.9063652470. The cubic root of 12158516 is about 229.9465282122.

The spelling of 12158516 in words is "twelve million, one hundred fifty-eight thousand, five hundred sixteen".