12256404 has 12 divisors (see below), whose sum is σ = 28598304. Its totient is φ = 4085464.

The previous prime is 12256403. The next prime is 12256421. The reversal of 12256404 is 40465221.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×12256404² = 300438878022432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12256403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 510672 + ... + 510695.

It is an arithmetic number, because the mean of its divisors is an integer number (2383192).

Almost surely, 2^12256404 is an apocalyptic number.

It is an amenable number.

12256404 is an abundant number, since it is smaller than the sum of its proper divisors (16341900).

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

12256404 is a wasteful number, since it uses less digits than its factorization.

12256404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021374 (or 1021372 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 12256404 is about 3500.9147376079. The cubic root of 12256404 is about 230.5619779913.

The spelling of 12256404 in words is "twelve million, two hundred fifty-six thousand, four hundred four".