2778448772 has 24 divisors (see below), whose sum is σ = 5324501952. Its totient is φ = 1258124000.

The previous prime is 2778448759. The next prime is 2778448787.

2778448772 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108479 + ... + 131622.

It is an arithmetic number, because the mean of its divisors is an integer number (221854248).

Almost surely, 2^2778448772 is an apocalyptic number.

2778448772 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2778448772 is a deficient number, since it is larger than the sum of its proper divisors (2546053180).

2778448772 is a wasteful number, since it uses less digits than its factorization.

2778448772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240379 (or 240377 counting only the distinct ones).

The product of its digits is 9834496, while the sum is 56.

The square root of 2778448772 is about 52710.9928952206. The cubic root of 2778448772 is about 1405.8342874127.

The spelling of 2778448772 in words is "two billion, seven hundred seventy-eight million, four hundred forty-eight thousand, seven hundred seventy-two".