12739680 has 120 divisors (see below), whose sum is σ = 45006192. Its totient is φ = 3393792.

The previous prime is 12739673. The next prime is 12739687. The reversal of 12739680 is 8693721.

It is an interprime number because it is at equal distance from previous prime (12739673) and next prime (12739687).

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12739687) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12469 + ... + 13451.

Almost surely, 2^12739680 is an apocalyptic number.

12739680 is a gapful number since it is divisible by the number (10) 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 12739680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22503096).

12739680 is an abundant number, since it is smaller than the sum of its proper divisors (32266512).

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

12739680 is an equidigital number, since it uses as much as digits as its factorization.

12739680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010 (or 993 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 12739680 is about 3569.2688326883. The cubic root of 12739680 is about 233.5533887735.

The spelling of 12739680 in words is "twelve million, seven hundred thirty-nine thousand, six hundred eighty".