2242222578 has 18 divisors (see below), whose sum is σ = 4858584237. Its totient is φ = 747340560.

The previous prime is 2242222571. The next prime is 2242222579. The reversal of 2242222578 is 8752222422.

2242222578 is a `hidden beast` number, since 2 + 2 + 422 + 225 + 7 + 8 = 666.

2242222578 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1446813369 + 795409209 = 38037^2 + 28203^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=33483.

It is not an unprimeable number, because it can be changed into a prime (2242222571) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 195318 + ... + 206478.

Almost surely, 2^2242222578 is an apocalyptic number.

2242222578 is an abundant number, since it is smaller than the sum of its proper divisors (2616361659).

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

2242222578 is an frugal number, since it uses more digits than its factorization.

2242222578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22330 (or 11166 counting only the distinct ones).

The product of its digits is 71680, while the sum is 36.

The square root of 2242222578 is about 47352.1127089383. The cubic root of 2242222578 is about 1308.8591310273.

The spelling of 2242222578 in words is "two billion, two hundred forty-two million, two hundred twenty-two thousand, five hundred seventy-eight".