12780932 has 6 divisors (see below), whose sum is σ = 22366638. Its totient is φ = 6390464.

The previous prime is 12780931. The next prime is 12780941. The reversal of 12780932 is 23908721.

It can be written as a sum of positive squares in only one way, i.e., 8844676 + 3936256 = 2974^2 + 1984^2 .

It is not an unprimeable number, because it can be changed into a prime (12780931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1597613 + ... + 1597620.

It is an arithmetic number, because the mean of its divisors is an integer number (3727773).

Almost surely, 2^12780932 is an apocalyptic number.

It is an amenable number.

12780932 is a deficient number, since it is larger than the sum of its proper divisors (9585706).

12780932 is a wasteful number, since it uses less digits than its factorization.

12780932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3195237 (or 3195235 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 12780932 is about 3575.0429368051. The cubic root of 12780932 is about 233.8052047256.

The spelling of 12780932 in words is "twelve million, seven hundred eighty thousand, nine hundred thirty-two".