12578356 has 12 divisors (see below), whose sum is σ = 25156768. Its totient is φ = 5390712.

The previous prime is 12578341. The next prime is 12578359. The reversal of 12578356 is 65387521.

12578356 is an admirable number.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12578359) 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, 224586 + ... + 224641.

Almost surely, 2^12578356 is an apocalyptic number.

It is an amenable number.

12578356 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12578356 is a wasteful number, since it uses less digits than its factorization.

12578356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449238 (or 449236 counting only the distinct ones).

The product of its digits is 50400, while the sum is 37.

The square root of 12578356 is about 3546.5978063491. The cubic root of 12578356 is about 232.5633603860.

The spelling of 12578356 in words is "twelve million, five hundred seventy-eight thousand, three hundred fifty-six".