2772838620 has 72 divisors (see below), whose sum is σ = 8419451040. Its totient is φ = 738675840.

The previous prime is 2772838591. The next prime is 2772838633. The reversal of 2772838620 is 268382772.

2772838620 is a `hidden beast` number, since 277 + 283 + 86 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 183721 + ... + 198239.

It is an arithmetic number, because the mean of its divisors is an integer number (116936820).

Almost surely, 2^2772838620 is an apocalyptic number.

2772838620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2772838620 is an abundant number, since it is smaller than the sum of its proper divisors (5646612420).

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

2772838620 is a wasteful number, since it uses less digits than its factorization.

2772838620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15595 (or 15590 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The square root of 2772838620 is about 52657.7498569774. The cubic root of 2772838620 is about 1404.8874451275.

The spelling of 2772838620 in words is "two billion, seven hundred seventy-two million, eight hundred thirty-eight thousand, six hundred twenty".