2772405720 has 96 divisors (see below), whose sum is σ = 10297516320. Its totient is φ = 633692160.

The previous prime is 2772405709. The next prime is 2772405731. The reversal of 2772405720 is 275042772.

It is an interprime number because it is at equal distance from previous prime (2772405709) and next prime (2772405731).

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 547561 + ... + 552600.

It is an arithmetic number, because the mean of its divisors is an integer number (107265795).

Almost surely, 2^2772405720 is an apocalyptic number.

2772405720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2772405720 is an abundant number, since it is smaller than the sum of its proper divisors (7525110600).

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

2772405720 is a wasteful number, since it uses less digits than its factorization.

2772405720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100185 (or 1100178 counting only the distinct ones).

The product of its (nonzero) digits is 54880, while the sum is 36.

The square root of 2772405720 is about 52653.6391904681. The cubic root of 2772405720 is about 1404.8143302308.

The spelling of 2772405720 in words is "two billion, seven hundred seventy-two million, four hundred five thousand, seven hundred twenty".