222936840 has 256 divisors, whose sum is σ = 873331200. Its totient is φ = 49517568.

The previous prime is 222936821. The next prime is 222936851. The reversal of 222936840 is 48639222.

222936840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 222936795 and 222936804.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 279322 + ... + 280118.

It is an arithmetic number, because the mean of its divisors is an integer number (3411450).

Almost surely, 2^222936840 is an apocalyptic number.

222936840 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 222936840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (436665600).

222936840 is an abundant number, since it is smaller than the sum of its proper divisors (650394360).

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

222936840 is a wasteful number, since it uses less digits than its factorization.

222936840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861 (or 851 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 222936840 is about 14931.0696200909. The cubic root of 222936840 is about 606.3554428847.

The spelling of 222936840 in words is "two hundred twenty-two million, nine hundred thirty-six thousand, eight hundred forty".