222684440 has 32 divisors (see below), whose sum is σ = 546590160. Its totient is φ = 80976000.

The previous prime is 222684437. The next prime is 222684457. The reversal of 222684440 is 44486222.

It is a super-2 number, since 2×222684440² = 99176719636227200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 222684397 and 222684406.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 252611 + ... + 253490.

Almost surely, 2^222684440 is an apocalyptic number.

222684440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222684440 is an abundant number, since it is smaller than the sum of its proper divisors (323905720).

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

222684440 is a wasteful number, since it uses less digits than its factorization.

222684440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506123 (or 506119 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 32.

The square root of 222684440 is about 14922.6150523291. The cubic root of 222684440 is about 606.1265261701.

The spelling of 222684440 in words is "two hundred twenty-two million, six hundred eighty-four thousand, four hundred forty".