12155696 has 20 divisors (see below), whose sum is σ = 26916432. Its totient is φ = 5209536.

The previous prime is 12155677. The next prime is 12155723. The reversal of 12155696 is 69655121.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54155 + ... + 54378.

Almost surely, 2^12155696 is an apocalyptic number.

12155696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12155696 is an abundant number, since it is smaller than the sum of its proper divisors (14760736).

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

12155696 is a wasteful number, since it uses less digits than its factorization.

12155696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108548 (or 108542 counting only the distinct ones).

The product of its digits is 16200, while the sum is 35.

The square root of 12155696 is about 3486.5019718910. The cubic root of 12155696 is about 229.9287491963.

It can be divided in two parts, 121 and 55696, that multiplied together give a square (6739216 = 2596²).

The spelling of 12155696 in words is "twelve million, one hundred fifty-five thousand, six hundred ninety-six".