12639792 has 80 divisors (see below), whose sum is σ = 36640512. Its totient is φ = 3720960.

The previous prime is 12639791. The next prime is 12639793. The reversal of 12639792 is 29793621.

It is an interprime number because it is at equal distance from previous prime (12639791) and next prime (12639793).

It is a self number, because there is not a number n which added to its sum of digits gives 12639792.

It is not an unprimeable number, because it can be changed into a prime (12639791) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19213 + ... + 19859.

Almost surely, 2^12639792 is an apocalyptic number.

12639792 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12639792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18320256).

12639792 is an abundant number, since it is smaller than the sum of its proper divisors (24000720).

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

12639792 is a wasteful number, since it uses less digits than its factorization.

12639792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706 (or 700 counting only the distinct ones).

The product of its digits is 40824, while the sum is 39.

The square root of 12639792 is about 3555.2485145205. The cubic root of 12639792 is about 232.9413791508.

It can be divided in two parts, 12639 and 792, that added together give a palindrome (13431).

The spelling of 12639792 in words is "twelve million, six hundred thirty-nine thousand, seven hundred ninety-two".