12578212 has 12 divisors (see below), whose sum is σ = 22153180. Its totient is φ = 6248736.

The previous prime is 12578201. The next prime is 12578239. The reversal of 12578212 is 21287521.

It can be written as a sum of positive squares in 2 ways, for example, as 3481956 + 9096256 = 1866^2 + 3016^2 .

It is a super-2 number, since 2×12578212² = 316422834233888, which contains 22 as substring.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

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, 9387 + ... + 10642.

Almost surely, 2^12578212 is an apocalyptic number.

It is an amenable number.

12578212 is a deficient number, since it is larger than the sum of its proper divisors (9574968).

12578212 is a wasteful number, since it uses less digits than its factorization.

12578212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20190 (or 20188 counting only the distinct ones).

The product of its digits is 2240, while the sum is 28.

The square root of 12578212 is about 3546.5775051449. The cubic root of 12578212 is about 232.5624729025.

The spelling of 12578212 in words is "twelve million, five hundred seventy-eight thousand, two hundred twelve".