12620720 has 80 divisors (see below), whose sum is σ = 34664448. Its totient is φ = 4181760.

The previous prime is 12620711. The next prime is 12620789. The reversal of 12620720 is 2702621.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 12620692 and 12620701.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16997 + ... + 17723.

Almost surely, 2^12620720 is an apocalyptic number.

12620720 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 12620720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17332224).

12620720 is an abundant number, since it is smaller than the sum of its proper divisors (22043728).

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

12620720 is a wasteful number, since it uses less digits than its factorization.

12620720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778 (or 772 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 12620720 is about 3552.5652703364. The cubic root of 12620720 is about 232.8241595440.

The spelling of 12620720 in words is "twelve million, six hundred twenty thousand, seven hundred twenty".