2772521628 has 48 divisors (see below), whose sum is σ = 6586944000. Its totient is φ = 907394688.

The previous prime is 2772521627. The next prime is 2772521699. The reversal of 2772521628 is 8261252772.

It is a self number, because there is not a number n which added to its sum of digits gives 2772521628.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2772521627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 733728 + ... + 737496.

It is an arithmetic number, because the mean of its divisors is an integer number (137228000).

Almost surely, 2^2772521628 is an apocalyptic number.

It is an amenable number.

2772521628 is an abundant number, since it is smaller than the sum of its proper divisors (3814422372).

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

2772521628 is a wasteful number, since it uses less digits than its factorization.

2772521628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4874 (or 4872 counting only the distinct ones).

The product of its digits is 188160, while the sum is 42.

The square root of 2772521628 is about 52654.7398436266. The cubic root of 2772521628 is about 1404.8339073258.

The spelling of 2772521628 in words is "two billion, seven hundred seventy-two million, five hundred twenty-one thousand, six hundred twenty-eight".