12957380 has 24 divisors (see below), whose sum is σ = 28089600. Its totient is φ = 5015520.

The previous prime is 12957361. The next prime is 12957389. The reversal of 12957380 is 8375921.

12957380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 12957380.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12957389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9830 + ... + 11069.

It is an arithmetic number, because the mean of its divisors is an integer number (1170400).

Almost surely, 2^12957380 is an apocalyptic number.

12957380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12957380 is an abundant number, since it is smaller than the sum of its proper divisors (15132220).

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

12957380 is a wasteful number, since it uses less digits than its factorization.

12957380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20939 (or 20937 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 12957380 is about 3599.6360927183. The cubic root of 12957380 is about 234.8762287719.

The spelling of 12957380 in words is "twelve million, nine hundred fifty-seven thousand, three hundred eighty".