222656040 has 96 divisors (see below), whose sum is σ = 750466080. Its totient is φ = 59372352.

The previous prime is 222656033. The next prime is 222656051. The reversal of 222656040 is 40656222.

222656040 is a `hidden beast` number, since 2 + 2 + 2 + 656 + 0 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 222655995 and 222656013.

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 23 ways as a sum of consecutive naturals, for example, 1734 + ... + 21173.

It is an arithmetic number, because the mean of its divisors is an integer number (7817355).

Almost surely, 2^222656040 is an apocalyptic number.

222656040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222656040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (375233040).

222656040 is an abundant number, since it is smaller than the sum of its proper divisors (527810040).

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

222656040 is a wasteful number, since it uses less digits than its factorization.

222656040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22933 (or 22917 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 222656040 is about 14921.6634461443. The cubic root of 222656040 is about 606.1007576803.

The spelling of 222656040 in words is "two hundred twenty-two million, six hundred fifty-six thousand, forty".