12955520 has 64 divisors (see below), whose sum is σ = 32019840. Its totient is φ = 5007360.

The previous prime is 12955517. The next prime is 12955531. The reversal of 12955520 is 2555921.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19514 + ... + 20166.

It is an arithmetic number, because the mean of its divisors is an integer number (500310).

Almost surely, 2^12955520 is an apocalyptic number.

12955520 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 12955520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16009920).

12955520 is an abundant number, since it is smaller than the sum of its proper divisors (19064320).

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

12955520 is an equidigital number, since it uses as much as digits as its factorization.

12955520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703 (or 691 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 12955520 is about 3599.3777239962. The cubic root of 12955520 is about 234.8649895993.

The spelling of 12955520 in words is "twelve million, nine hundred fifty-five thousand, five hundred twenty".