222528996 has 18 divisors (see below), whose sum is σ = 562503942. Its totient is φ = 74176320.

The previous prime is 222528953. The next prime is 222529009. The reversal of 222528996 is 699825222.

It can be written as a sum of positive squares in only one way, i.e., 203918400 + 18610596 = 14280^2 + 4314^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3090645 + ... + 3090716.

It is an arithmetic number, because the mean of its divisors is an integer number (31250219).

Almost surely, 2^222528996 is an apocalyptic number.

It is an amenable number.

222528996 is an abundant number, since it is smaller than the sum of its proper divisors (339974946).

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

222528996 is a wasteful number, since it uses less digits than its factorization.

222528996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6181371 (or 6181366 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 222528996 is about 14917.4058066408. The cubic root of 222528996 is about 605.9854585930.

The spelling of 222528996 in words is "two hundred twenty-two million, five hundred twenty-eight thousand, nine hundred ninety-six".