13275920 has 80 divisors (see below), whose sum is σ = 35735808. Its totient is φ = 4492800.

The previous prime is 13275901. The next prime is 13275931. The reversal of 13275920 is 2957231.

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

It is a nialpdrome in base 16.

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, 84482 + ... + 84638.

Almost surely, 2^13275920 is an apocalyptic number.

13275920 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 13275920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17867904).

13275920 is an abundant number, since it is smaller than the sum of its proper divisors (22459888).

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

13275920 is a wasteful number, since it uses less digits than its factorization.

13275920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328 (or 322 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 13275920 is about 3643.6135909287. The cubic root of 13275920 is about 236.7853754360.

The spelling of 13275920 in words is "thirteen million, two hundred seventy-five thousand, nine hundred twenty".