2229515728 has 80 divisors (see below), whose sum is σ = 5001376320. Its totient is φ = 951552000.

The previous prime is 2229515723. The next prime is 2229515731. The reversal of 2229515728 is 8275159222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2229515723) 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, 2120803 + ... + 2121853.

It is an arithmetic number, because the mean of its divisors is an integer number (62517204).

Almost surely, 2^2229515728 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 2229515728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2500688160).

2229515728 is an abundant number, since it is smaller than the sum of its proper divisors (2771860592).

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

2229515728 is a wasteful number, since it uses less digits than its factorization.

2229515728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1796 (or 1790 counting only the distinct ones).

The product of its digits is 201600, while the sum is 43.

The square root of 2229515728 is about 47217.7480191506. The cubic root of 2229515728 is about 1306.3819768273.

The spelling of 2229515728 in words is "two billion, two hundred twenty-nine million, five hundred fifteen thousand, seven hundred twenty-eight".