2628728244 has 72 divisors (see below), whose sum is σ = 6801369120. Its totient is φ = 855796032.

The previous prime is 2628728231. The next prime is 2628728273. The reversal of 2628728244 is 4428278262.

It is a self number, because there is not a number n which added to its sum of digits gives 2628728244.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 329527 + ... + 337409.

It is an arithmetic number, because the mean of its divisors is an integer number (94463460).

Almost surely, 2^2628728244 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 2628728244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3400684560).

2628728244 is an abundant number, since it is smaller than the sum of its proper divisors (4172640876).

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

2628728244 is a wasteful number, since it uses less digits than its factorization.

2628728244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8109 (or 8104 counting only the distinct ones).

The product of its digits is 688128, while the sum is 45.

The square root of 2628728244 is about 51271.1248560045. The cubic root of 2628728244 is about 1380.1148549648.

The spelling of 2628728244 in words is "two billion, six hundred twenty-eight million, seven hundred twenty-eight thousand, two hundred forty-four".