15722730320 has 160 divisors (see below), whose sum is σ = 40518835200. Its totient is φ = 5673254400.

The previous prime is 15722730281. The next prime is 15722730329. The reversal of 15722730320 is 2303722751.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15722730329) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15865025 + ... + 15866015.

It is an arithmetic number, because the mean of its divisors is an integer number (253242720).

Almost surely, 2^15722730320 is an apocalyptic number.

15722730320 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 15722730320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20259417600).

15722730320 is an abundant number, since it is smaller than the sum of its proper divisors (24796104880).

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

15722730320 is a wasteful number, since it uses less digits than its factorization.

15722730320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1186 (or 1158 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 32.

The spelling of 15722730320 in words is "fifteen billion, seven hundred twenty-two million, seven hundred thirty thousand, three hundred twenty".