13255920 has 240 divisors, whose sum is σ = 51023520. Its totient is φ = 3151872.

The previous prime is 13255873. The next prime is 13255951. The reversal of 13255920 is 2955231.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 697671 + ... + 697689.

It is an arithmetic number, because the mean of its divisors is an integer number (212598).

Almost surely, 2^13255920 is an apocalyptic number.

13255920 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 13255920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25511760).

13255920 is an abundant number, since it is smaller than the sum of its proper divisors (37767600).

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

13255920 is a wasteful number, since it uses less digits than its factorization.

13255920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77 (or 46 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 13255920 is about 3640.8680283691. The cubic root of 13255920 is about 236.6664109852. Note that the first 3 decimals are identical.

The spelling of 13255920 in words is "thirteen million, two hundred fifty-five thousand, nine hundred twenty".