2278998722 has 48 divisors (see below), whose sum is σ = 4671862272. Its totient is φ = 819614880.

The previous prime is 2278998721. The next prime is 2278998739.

It is a happy number.

2278998722 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (2278998721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67298 + ... + 95325.

It is an arithmetic number, because the mean of its divisors is an integer number (97330464).

Almost surely, 2^2278998722 is an apocalyptic number.

2278998722 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2278998722 is an abundant number, since it is smaller than the sum of its proper divisors (2392863550).

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

2278998722 is a wasteful number, since it uses less digits than its factorization.

2278998722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162663 (or 162656 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 56.

The square root of 2278998722 is about 47738.8596638001. The cubic root of 2278998722 is about 1315.9761765719.

The spelling of 2278998722 in words is "two billion, two hundred seventy-eight million, nine hundred ninety-eight thousand, seven hundred twenty-two".