15791020 has 48 divisors (see below), whose sum is σ = 38203200. Its totient is φ = 5370624.

The previous prime is 15790991. The next prime is 15791023. The reversal of 15791020 is 2019751.

It is not an unprimeable number, because it can be changed into a prime (15791023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20482 + ... + 21238.

It is an arithmetic number, because the mean of its divisors is an integer number (795900).

Almost surely, 2^15791020 is an apocalyptic number.

15791020 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 15791020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19101600).

15791020 is an abundant number, since it is smaller than the sum of its proper divisors (22412180).

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

15791020 is a wasteful number, since it uses less digits than its factorization.

15791020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 922 (or 920 counting only the distinct ones).

The product of its (nonzero) digits is 630, while the sum is 25.

The square root of 15791020 is about 3973.7916402348. The cubic root of 15791020 is about 250.8823223656.

The spelling of 15791020 in words is "fifteen million, seven hundred ninety-one thousand, twenty".