12739400 has 24 divisors (see below), whose sum is σ = 29619570. Its totient is φ = 5095680.

The previous prime is 12739393. The next prime is 12739403. The reversal of 12739400 is 493721.

It can be written as a sum of positive squares in 3 ways, for example, as 5885476 + 6853924 = 2426^2 + 2618^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12739400.

It is not an unprimeable number, because it can be changed into a prime (12739403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31649 + ... + 32048.

Almost surely, 2^12739400 is an apocalyptic number.

12739400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12739400 is an abundant number, since it is smaller than the sum of its proper divisors (16880170).

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

12739400 is a wasteful number, since it uses less digits than its factorization.

12739400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63713 (or 63704 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 12739400 is about 3569.2296087531. The cubic root of 12739400 is about 233.5516777042.

The spelling of 12739400 in words is "twelve million, seven hundred thirty-nine thousand, four hundred".