2202222978 has 42 divisors (see below), whose sum is σ = 4956769209. Its totient is φ = 733477032.

The previous prime is 2202222937. The next prime is 2202222989. The reversal of 2202222978 is 8792222022.

It can be written as a sum of positive squares in 2 ways, for example, as 1350342009 + 851880969 = 36747^2 + 29187^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=33183.

It is an unprimeable number.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 1791268 + ... + 1792496.

Almost surely, 2^2202222978 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2202222978

2202222978 is an abundant number, since it is smaller than the sum of its proper divisors (2754546231).

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

2202222978 is an frugal number, since it uses more digits than its factorization.

2202222978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2478 (or 1234 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 2202222978 is about 46927.8486402264. The cubic root of 2202222978 is about 1301.0293579007.

The spelling of 2202222978 in words is "two billion, two hundred two million, two hundred twenty-two thousand, nine hundred seventy-eight".