12157696 has 18 divisors (see below), whose sum is σ = 24268412. Its totient is φ = 6078720.

The previous prime is 12157693. The next prime is 12157697. The reversal of 12157696 is 69675121.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (12157693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23490 + ... + 24001.

Almost surely, 2^12157696 is an apocalyptic number.

12157696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12157696 is a deficient number, since it is larger than the sum of its proper divisors (12110716).

12157696 is an frugal number, since it uses more digits than its factorization.

12157696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47507 (or 47493 counting only the distinct ones).

The product of its digits is 22680, while the sum is 37.

The square root of 12157696 is about 3486.7887805257. The cubic root of 12157696 is about 229.9413587110.

It can be divided in two parts, 1215 and 7696, that added together give a triangular number (8911 = T₁₃₃).

The spelling of 12157696 in words is "twelve million, one hundred fifty-seven thousand, six hundred ninety-six".