15224995820 has 96 divisors (see below), whose sum is σ = 33791385600. Its totient is φ = 5750877440.

The previous prime is 15224995783. The next prime is 15224995859. The reversal of 15224995820 is 2859942251.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13090559 + ... + 13091721.

It is an arithmetic number, because the mean of its divisors is an integer number (351993600).

Almost surely, 2^15224995820 is an apocalyptic number.

15224995820 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 15224995820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16895692800).

15224995820 is an abundant number, since it is smaller than the sum of its proper divisors (18566389780).

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

15224995820 is a wasteful number, since it uses less digits than its factorization.

15224995820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1535 (or 1533 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 47.

The spelling of 15224995820 in words is "fifteen billion, two hundred twenty-four million, nine hundred ninety-five thousand, eight hundred twenty".