222812840 has 32 divisors (see below), whose sum is σ = 502968960. Its totient is φ = 88833600.

The previous prime is 222812833. The next prime is 222812861. The reversal of 222812840 is 48218222.

222812840 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3485 + ... + 21395.

It is an arithmetic number, because the mean of its divisors is an integer number (15717780).

Almost surely, 2^222812840 is an apocalyptic number.

222812840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222812840 is an abundant number, since it is smaller than the sum of its proper divisors (280156120).

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

222812840 is a wasteful number, since it uses less digits than its factorization.

222812840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18233 (or 18229 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 29.

The square root of 222812840 is about 14926.9166273548. The cubic root of 222812840 is about 606.2430014426.

The spelling of 222812840 in words is "two hundred twenty-two million, eight hundred twelve thousand, eight hundred forty".