2772639888 has 80 divisors (see below), whose sum is σ = 7845569280. Its totient is φ = 839845888.

The previous prime is 2772639887. The next prime is 2772639889. The reversal of 2772639888 is 8889362772.

It is an interprime number because it is at equal distance from previous prime (2772639887) and next prime (2772639889).

It is not an unprimeable number, because it can be changed into a prime (2772639887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34920 + ... + 82247.

It is an arithmetic number, because the mean of its divisors is an integer number (98069616).

Almost surely, 2^2772639888 is an apocalyptic number.

It is an amenable number.

2772639888 is an abundant number, since it is smaller than the sum of its proper divisors (5072929392).

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

2772639888 is a wasteful number, since it uses less digits than its factorization.

2772639888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117224 (or 117218 counting only the distinct ones).

The product of its digits is 16257024, while the sum is 60.

The square root of 2772639888 is about 52655.8628074785. The cubic root of 2772639888 is about 1404.8538811160.

The spelling of 2772639888 in words is "two billion, seven hundred seventy-two million, six hundred thirty-nine thousand, eight hundred eighty-eight".