13255620 has 96 divisors (see below), whose sum is σ = 43615488. Its totient is φ = 2944512.

The previous prime is 13255609. The next prime is 13255621. The reversal of 13255620 is 2655231.

It is a super-2 number, since 2×13255620² = 351422923168800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13255621) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15114 + ... + 15966.

It is an arithmetic number, because the mean of its divisors is an integer number (454328).

Almost surely, 2^13255620 is an apocalyptic number.

13255620 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 13255620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21807744).

13255620 is an abundant number, since it is smaller than the sum of its proper divisors (30359868).

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

13255620 is a wasteful number, since it uses less digits than its factorization.

13255620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909 (or 907 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 13255620 is about 3640.8268291694. The cubic root of 13255620 is about 236.6646256078.

The spelling of 13255620 in words is "thirteen million, two hundred fifty-five thousand, six hundred twenty".