12478572 has 18 divisors (see below), whose sum is σ = 31543148. Its totient is φ = 4159512.

The previous prime is 12478567. The next prime is 12478579. The reversal of 12478572 is 27587421.

12478572 is a `hidden beast` number, since 12 + 4 + 78 + 572 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 346627 = 12478572 / (1 + 2 + 4 + 7 + 8 + 5 + 7 + 2).

It is not an unprimeable number, because it can be changed into a prime (12478579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 173278 + ... + 173349.

Almost surely, 2^12478572 is an apocalyptic number.

12478572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12478572 is an abundant number, since it is smaller than the sum of its proper divisors (19064576).

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

12478572 is a wasteful number, since it uses less digits than its factorization.

12478572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346637 (or 346632 counting only the distinct ones).

The product of its digits is 31360, while the sum is 36.

The square root of 12478572 is about 3532.5022292987. The cubic root of 12478572 is about 231.9467525440.

The spelling of 12478572 in words is "twelve million, four hundred seventy-eight thousand, five hundred seventy-two".