2272133128 has 8 divisors (see below), whose sum is σ = 4260249630. Its totient is φ = 1136066560.

The previous prime is 2272133057. The next prime is 2272133167. The reversal of 2272133128 is 8213312722.

It can be written as a sum of positive squares in only one way, i.e., 1957354564 + 314778564 = 44242^2 + 17742^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 2272133128.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142008313 + ... + 142008328.

Almost surely, 2^2272133128 is an apocalyptic number.

It is an amenable number.

2272133128 is a deficient number, since it is larger than the sum of its proper divisors (1988116502).

2272133128 is a wasteful number, since it uses less digits than its factorization.

2272133128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284016647 (or 284016643 counting only the distinct ones).

The product of its digits is 8064, while the sum is 31.

The square root of 2272133128 is about 47666.8976124941. The cubic root of 2272133128 is about 1314.6533666877.

The spelling of 2272133128 in words is "two billion, two hundred seventy-two million, one hundred thirty-three thousand, one hundred twenty-eight".