12944780 has 24 divisors (see below), whose sum is σ = 27251952. Its totient is φ = 5164992.

The previous prime is 12944779. The next prime is 12944797. The reversal of 12944780 is 8744921.

It is a self number, because there is not a number n which added to its sum of digits gives 12944780.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14219 + ... + 15101.

It is an arithmetic number, because the mean of its divisors is an integer number (1135498).

Almost surely, 2^12944780 is an apocalyptic number.

12944780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12944780 is an abundant number, since it is smaller than the sum of its proper divisors (14307172).

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

12944780 is a wasteful number, since it uses less digits than its factorization.

12944780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1625 (or 1623 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 12944780 is about 3597.8854901178. The cubic root of 12944780 is about 234.8000713935.

The spelling of 12944780 in words is "twelve million, nine hundred forty-four thousand, seven hundred eighty".