222655040 has 56 divisors (see below), whose sum is σ = 548502840. Its totient is φ = 85987328.

The previous prime is 222655009. The next prime is 222655049. The reversal of 222655040 is 40556222.

It can be written as a sum of positive squares in 4 ways, for example, as 287296 + 222367744 = 536^2 + 14912^2 .

It is not an unprimeable number, because it can be changed into a prime (222655049) 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 7 ways as a sum of consecutive naturals, for example, 2717 + ... + 21276.

Almost surely, 2^222655040 is an apocalyptic number.

222655040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222655040 is an abundant number, since it is smaller than the sum of its proper divisors (325847800).

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

222655040 is a wasteful number, since it uses less digits than its factorization.

222655040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24039 (or 24029 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 222655040 is about 14921.6299377782. The cubic root of 222655040 is about 606.0998502992.

The spelling of 222655040 in words is "two hundred twenty-two million, six hundred fifty-five thousand, forty".