12957390 has 24 divisors (see below), whose sum is σ = 33689448. Its totient is φ = 3455280.

The previous prime is 12957389. The next prime is 12957397. The reversal of 12957390 is 9375921.

12957390 is nontrivially palindromic in base 8.

It is a super-2 number, since 2×12957390² = 335787911224200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12957397) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71896 + ... + 72075.

It is an arithmetic number, because the mean of its divisors is an integer number (1403727).

Almost surely, 2^12957390 is an apocalyptic number.

12957390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12957390 is an abundant number, since it is smaller than the sum of its proper divisors (20732058).

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

12957390 is a wasteful number, since it uses less digits than its factorization.

12957390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143984 (or 143981 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The square root of 12957390 is about 3599.6374817473. The cubic root of 12957390 is about 234.8762891946.

The spelling of 12957390 in words is "twelve million, nine hundred fifty-seven thousand, three hundred ninety".