12790418 has 4 divisors (see below), whose sum is σ = 19185630. Its totient is φ = 6395208.

The previous prime is 12790411. The next prime is 12790423. The reversal of 12790418 is 81409721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81409721 = 317 ⋅256813.

It can be written as a sum of positive squares in only one way, i.e., 10220809 + 2569609 = 3197^2 + 1603^2 .

It is a super-2 number, since 2×12790418² = 327189585229448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12790411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3197603 + ... + 3197606.

Almost surely, 2^12790418 is an apocalyptic number.

12790418 is a deficient number, since it is larger than the sum of its proper divisors (6395212).

12790418 is an equidigital number, since it uses as much as digits as its factorization.

12790418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6395211.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 12790418 is about 3576.3693880806. The cubic root of 12790418 is about 233.8630337816.

The spelling of 12790418 in words is "twelve million, seven hundred ninety thousand, four hundred eighteen".