2278888722 has 32 divisors (see below), whose sum is σ = 5524580160. Its totient is φ = 690572160.

The previous prime is 2278888693. The next prime is 2278888739.

2278888722 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1917663 + ... + 1918850.

It is an arithmetic number, because the mean of its divisors is an integer number (172643130).

Almost surely, 2^2278888722 is an apocalyptic number.

2278888722 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2278888722 is an abundant number, since it is smaller than the sum of its proper divisors (3245691438).

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

2278888722 is a wasteful number, since it uses less digits than its factorization.

2278888722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3836535 (or 3836529 counting only the distinct ones).

The product of its digits is 3211264, while the sum is 54.

The square root of 2278888722 is about 47737.7075486454. The cubic root of 2278888722 is about 1315.9550035736.

The spelling of 2278888722 in words is "two billion, two hundred seventy-eight million, eight hundred eighty-eight thousand, seven hundred twenty-two".