2772724428 has 72 divisors (see below), whose sum is σ = 7325031168. Its totient is φ = 882671328.

The previous prime is 2772724421. The next prime is 2772724483. The reversal of 2772724428 is 8244272772.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (2772724421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 612951 + ... + 617457.

It is an arithmetic number, because the mean of its divisors is an integer number (101736544).

Almost surely, 2^2772724428 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 2772724428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3662515584).

2772724428 is an abundant number, since it is smaller than the sum of its proper divisors (4552306740).

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

2772724428 is a wasteful number, since it uses less digits than its factorization.

2772724428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5283 (or 5278 counting only the distinct ones).

The product of its digits is 702464, while the sum is 45.

The square root of 2772724428 is about 52656.6655609715. The cubic root of 2772724428 is about 1404.8681593423.

The spelling of 2772724428 in words is "two billion, seven hundred seventy-two million, seven hundred twenty-four thousand, four hundred twenty-eight".