13303872 has 56 divisors (see below), whose sum is σ = 39116000. Its totient is φ = 4434048.

The previous prime is 13303861. The next prime is 13303891. The reversal of 13303872 is 27830331.

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2122 + ... + 5577.

It is an arithmetic number, because the mean of its divisors is an integer number (698500).

Almost surely, 2^13303872 is an apocalyptic number.

13303872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13303872 is an abundant number, since it is smaller than the sum of its proper divisors (25812128).

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

13303872 is an equidigital number, since it uses as much as digits as its factorization.

13303872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7720 (or 7704 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 13303872 is about 3647.4473265559. The cubic root of 13303872 is about 236.9514401392.

The spelling of 13303872 in words is "thirteen million, three hundred three thousand, eight hundred seventy-two".