12156404 has 12 divisors (see below), whose sum is σ = 22910244. Its totient is φ = 5610624.

The previous prime is 12156383. The next prime is 12156439. The reversal of 12156404 is 40465121.

It can be written as a sum of positive squares in 2 ways, for example, as 3168400 + 8988004 = 1780^2 + 2998^2 .

It is a super-2 number, since 2×12156404² = 295556316422432, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12156404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116837 + ... + 116940.

It is an arithmetic number, because the mean of its divisors is an integer number (1909187).

Almost surely, 2^12156404 is an apocalyptic number.

It is an amenable number.

12156404 is a deficient number, since it is larger than the sum of its proper divisors (10753840).

12156404 is a wasteful number, since it uses less digits than its factorization.

12156404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233794 (or 233792 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 12156404 is about 3486.6035048454. The cubic root of 12156404 is about 229.9332131226.

The spelling of 12156404 in words is "twelve million, one hundred fifty-six thousand, four hundred four".