12770520 has 128 divisors (see below), whose sum is σ = 45757440. Its totient is φ = 2787840.

The previous prime is 12770507. The next prime is 12770551. The reversal of 12770520 is 2507721.

12770520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18990 + ... + 19650.

It is an arithmetic number, because the mean of its divisors is an integer number (357480).

Almost surely, 2^12770520 is an apocalyptic number.

12770520 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 12770520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22878720).

12770520 is an abundant number, since it is smaller than the sum of its proper divisors (32986920).

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

12770520 is a wasteful number, since it uses less digits than its factorization.

12770520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705 (or 701 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 24.

The square root of 12770520 is about 3573.5864338225. The cubic root of 12770520 is about 233.7416975899.

The spelling of 12770520 in words is "twelve million, seven hundred seventy thousand, five hundred twenty".