12578732 has 12 divisors (see below), whose sum is σ = 22045296. Its totient is φ = 6280080.

The previous prime is 12578717. The next prime is 12578737. The reversal of 12578732 is 23787521.

It is a junction number, because it is equal to n+sod(n) for n = 12578692 and 12578701.

It is not an unprimeable number, because it can be changed into a prime (12578737) 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, 1382 + ... + 5202.

It is an arithmetic number, because the mean of its divisors is an integer number (1837108).

Almost surely, 2^12578732 is an apocalyptic number.

It is an amenable number.

12578732 is a deficient number, since it is larger than the sum of its proper divisors (9466564).

12578732 is a wasteful number, since it uses less digits than its factorization.

12578732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4648 (or 4646 counting only the distinct ones).

The product of its digits is 23520, while the sum is 35.

The square root of 12578732 is about 3546.6508145009. The cubic root of 12578732 is about 232.5656776722.

The spelling of 12578732 in words is "twelve million, five hundred seventy-eight thousand, seven hundred thirty-two".