2247906728 has 8 divisors (see below), whose sum is σ = 4214825130. Its totient is φ = 1123953360.

The previous prime is 2247906709. The next prime is 2247906733. The reversal of 2247906728 is 8276097422.

2247906728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1705855204 + 542051524 = 41302^2 + 23282^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140494163 + ... + 140494178.

Almost surely, 2^2247906728 is an apocalyptic number.

It is an amenable number.

2247906728 is a deficient number, since it is larger than the sum of its proper divisors (1966918402).

2247906728 is a wasteful number, since it uses less digits than its factorization.

2247906728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280988347 (or 280988343 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 47.

The square root of 2247906728 is about 47412.0947438520. The cubic root of 2247906728 is about 1309.9642062360.

The spelling of 2247906728 in words is "two billion, two hundred forty-seven million, nine hundred six thousand, seven hundred twenty-eight".