12679720 has 32 divisors (see below), whose sum is σ = 29072520. Its totient is φ = 4975360.

The previous prime is 12679691. The next prime is 12679729. The reversal of 12679720 is 2797621.

It can be written as a sum of positive squares in 4 ways, for example, as 7918596 + 4761124 = 2814^2 + 2182^2 .

It is a super-3 number, since 3×12679720³ (a number of 22 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (12679729) 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, 871 + ... + 5110.

Almost surely, 2^12679720 is an apocalyptic number.

12679720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12679720 is an abundant number, since it is smaller than the sum of its proper divisors (16392800).

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

12679720 is a wasteful number, since it uses less digits than its factorization.

12679720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6045 (or 6041 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 12679720 is about 3560.8594468190. The cubic root of 12679720 is about 233.1864018268.

The spelling of 12679720 in words is "twelve million, six hundred seventy-nine thousand, seven hundred twenty".