12157089 has 16 divisors (see below), whose sum is σ = 18957312. Its totient is φ = 6784848.

The previous prime is 12157069. The next prime is 12157129. The reversal of 12157089 is 98075121.

It is a de Polignac number, because none of the positive numbers 2^k-12157089 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12157039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5829 + ... + 7634.

It is an arithmetic number, because the mean of its divisors is an integer number (1184832).

Almost surely, 2^12157089 is an apocalyptic number.

It is an amenable number.

12157089 is a deficient number, since it is larger than the sum of its proper divisors (6800223).

12157089 is a wasteful number, since it uses less digits than its factorization.

12157089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13516.

The product of its (nonzero) digits is 5040, while the sum is 33.

The square root of 12157089 is about 3486.7017365986. The cubic root of 12157089 is about 229.9375318694.

The spelling of 12157089 in words is "twelve million, one hundred fifty-seven thousand, eighty-nine".