12157194 has 24 divisors (see below), whose sum is σ = 28284768. Its totient is φ = 3473400.

The previous prime is 12157153. The next prime is 12157199. The reversal of 12157194 is 49175121.

It is not an unprimeable number, because it can be changed into a prime (12157199) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20382 + ... + 20969.

It is an arithmetic number, because the mean of its divisors is an integer number (1178532).

Almost surely, 2^12157194 is an apocalyptic number.

12157194 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12157194 is an abundant number, since it is smaller than the sum of its proper divisors (16127574).

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

12157194 is a wasteful number, since it uses less digits than its factorization.

12157194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41370 (or 41363 counting only the distinct ones).

The product of its digits is 2520, while the sum is 30.

The square root of 12157194 is about 3486.7167937761. The cubic root of 12157194 is about 229.9381938528.

The spelling of 12157194 in words is "twelve million, one hundred fifty-seven thousand, one hundred ninety-four".