2219516728 has 32 divisors (see below), whose sum is σ = 4889147760. Its totient is φ = 931265280.

The previous prime is 2219516707. The next prime is 2219516737. The reversal of 2219516728 is 8276159122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 968925 + ... + 971212.

Almost surely, 2^2219516728 is an apocalyptic number.

It is an amenable number.

2219516728 is an abundant number, since it is smaller than the sum of its proper divisors (2669631032).

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

2219516728 is a wasteful number, since it uses less digits than its factorization.

2219516728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1940167 (or 1940163 counting only the distinct ones).

The product of its digits is 120960, while the sum is 43.

The square root of 2219516728 is about 47111.7472399401. The cubic root of 2219516728 is about 1304.4260827375.

The spelling of 2219516728 in words is "two billion, two hundred nineteen million, five hundred sixteen thousand, seven hundred twenty-eight".