12578004 has 30 divisors (see below), whose sum is σ = 32882234. Its totient is φ = 4192560.

The previous prime is 12577997. The next prime is 12578009. The reversal of 12578004 is 40087521.

It can be written as a sum of positive squares in only one way, i.e., 11209104 + 1368900 = 3348^2 + 1170^2 .

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12578009) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 19087 + ... + 19734.

Almost surely, 2^12578004 is an apocalyptic number.

It is an amenable number.

12578004 is an abundant number, since it is smaller than the sum of its proper divisors (20304230).

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

12578004 is a wasteful number, since it uses less digits than its factorization.

12578004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38837 (or 38826 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 12578004 is about 3546.5481809782. The cubic root of 12578004 is about 232.5611909699.

It can be divided in two parts, 1257 and 8004, that added together give a cube (9261 = 21³).

The spelling of 12578004 in words is "twelve million, five hundred seventy-eight thousand, four".