5015815728 has 160 divisors (see below), whose sum is σ = 17105333760. Its totient is φ = 1226158080.

The previous prime is 5015815723. The next prime is 5015815733. The reversal of 5015815728 is 8275185105.

It is an interprime number because it is at equal distance from previous prime (5015815723) and next prime (5015815733).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 5015815728.

It is not an unprimeable number, because it can be changed into a prime (5015815723) 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, 22918 + ... + 102746.

It is an arithmetic number, because the mean of its divisors is an integer number (106908336).

Almost surely, 2^5015815728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5015815728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8552666880).

5015815728 is an abundant number, since it is smaller than the sum of its proper divisors (12089518032).

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

5015815728 is a wasteful number, since it uses less digits than its factorization.

5015815728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79875 (or 79869 counting only the distinct ones).

The product of its (nonzero) digits is 112000, while the sum is 42.

The square root of 5015815728 is about 70822.4239065566. The cubic root of 5015815728 is about 1711.7770166246. Note that the first 3 decimals are identical.

The spelling of 5015815728 in words is "five billion, fifteen million, eight hundred fifteen thousand, seven hundred twenty-eight".