223322978 has 6 divisors (see below), whose sum is σ = 335016171. Its totient is φ = 111650922.

The previous prime is 223322971. The next prime is 223323007. The reversal of 223322978 is 879223322.

It can be written as a sum of positive squares in only one way, i.e., 111661489 + 111661489 = 10567^2 + 10567^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=10567.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (223322971) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 15851 + ... + 26417.

Almost surely, 2^223322978 is an apocalyptic number.

223322978 is a deficient number, since it is larger than the sum of its proper divisors (111693193).

223322978 is an frugal number, since it uses more digits than its factorization.

223322978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21136 (or 10569 counting only the distinct ones).

The product of its digits is 72576, while the sum is 38.

The square root of 223322978 is about 14943.9947135965. The cubic root of 223322978 is about 606.7053204986.

The spelling of 223322978 in words is "two hundred twenty-three million, three hundred twenty-two thousand, nine hundred seventy-eight".