222774912 has 48 divisors (see below), whose sum is σ = 641061330. Its totient is φ = 74257920.

The previous prime is 222774907. The next prime is 222774913. The reversal of 222774912 is 219477222.

It can be written as a sum of positive squares in only one way, i.e., 186486336 + 36288576 = 13656^2 + 6024^2 .

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×222774912² = 99257322833215488, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (222774913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 95539 + ... + 97842.

Almost surely, 2^222774912 is an apocalyptic number.

It is an amenable number.

222774912 is an abundant number, since it is smaller than the sum of its proper divisors (418286418).

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

222774912 is a wasteful number, since it uses less digits than its factorization.

222774912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193401 (or 193386 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 222774912 is about 14925.6461166678. The cubic root of 222774912 is about 606.2086005386.

The spelling of 222774912 in words is "two hundred twenty-two million, seven hundred seventy-four thousand, nine hundred twelve".