13256620 has 48 divisors (see below), whose sum is σ = 30467808. Its totient is φ = 4815360.

The previous prime is 13256597. The next prime is 13256647. The reversal of 13256620 is 2665231.

13256620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 17040 + ... + 17800.

It is an arithmetic number, because the mean of its divisors is an integer number (634746).

Almost surely, 2^13256620 is an apocalyptic number.

13256620 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 13256620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15233904).

13256620 is an abundant number, since it is smaller than the sum of its proper divisors (17211188).

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

13256620 is a wasteful number, since it uses less digits than its factorization.

13256620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850 (or 848 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 13256620 is about 3640.9641580219. The cubic root of 13256620 is about 236.6705767610.

The spelling of 13256620 in words is "thirteen million, two hundred fifty-six thousand, six hundred twenty".