2656328272 has 80 divisors (see below), whose sum is σ = 5711773312. Its totient is φ = 1188794880.

The previous prime is 2656328263. The next prime is 2656328273. The reversal of 2656328272 is 2728236562.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2656328273) 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, 4209397 + ... + 4210027.

Almost surely, 2^2656328272 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 2656328272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2855886656).

2656328272 is an abundant number, since it is smaller than the sum of its proper divisors (3055445040).

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

2656328272 is a wasteful number, since it uses less digits than its factorization.

2656328272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1236 (or 1230 counting only the distinct ones).

The product of its digits is 483840, while the sum is 43.

The square root of 2656328272 is about 51539.5796645646. The cubic root of 2656328272 is about 1384.9281671964.

The spelling of 2656328272 in words is "two billion, six hundred fifty-six million, three hundred twenty-eight thousand, two hundred seventy-two".