12740320 has 24 divisors (see below), whose sum is σ = 30099384. Its totient is φ = 5096064.

The previous prime is 12740303. The next prime is 12740333. The reversal of 12740320 is 2304721.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39654 + ... + 39973.

It is an arithmetic number, because the mean of its divisors is an integer number (1254141).

Almost surely, 2^12740320 is an apocalyptic number.

12740320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12740320 is an abundant number, since it is smaller than the sum of its proper divisors (17359064).

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

12740320 is an equidigital number, since it uses as much as digits as its factorization.

12740320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79642 (or 79634 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 12740320 is about 3569.3584857786. The cubic root of 12740320 is about 233.5572996950.

The spelling of 12740320 in words is "twelve million, seven hundred forty thousand, three hundred twenty".