13159720 has 64 divisors (see below), whose sum is σ = 34657920. Its totient is φ = 4402944.

The previous prime is 13159697. The next prime is 13159747. The reversal of 13159720 is 2795131.

It is a Harshad number since it is a multiple of its sum of digits (28).

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, 11494 + ... + 12586.

It is an arithmetic number, because the mean of its divisors is an integer number (541530).

Almost surely, 2^13159720 is an apocalyptic number.

13159720 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 13159720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17328960).

13159720 is an abundant number, since it is smaller than the sum of its proper divisors (21498200).

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

13159720 is a wasteful number, since it uses less digits than its factorization.

13159720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1154 (or 1150 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 13159720 is about 3627.6328369889. The cubic root of 13159720 is about 236.0925137627.

The spelling of 13159720 in words is "thirteen million, one hundred fifty-nine thousand, seven hundred twenty".