13165320 has 96 divisors (see below), whose sum is σ = 45964800. Its totient is φ = 3007872.

The previous prime is 13165307. The next prime is 13165337. The reversal of 13165320 is 2356131.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4761 + ... + 6999.

It is an arithmetic number, because the mean of its divisors is an integer number (478800).

Almost surely, 2^13165320 is an apocalyptic number.

13165320 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 13165320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22982400).

13165320 is an abundant number, since it is smaller than the sum of its proper divisors (32799480).

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

13165320 is a wasteful number, since it uses less digits than its factorization.

13165320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2267 (or 2256 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 13165320 is about 3628.4046080888. The cubic root of 13165320 is about 236.1259980259.

The spelling of 13165320 in words is "thirteen million, one hundred sixty-five thousand, three hundred twenty".