222878000 has 40 divisors (see below), whose sum is σ = 538923840. Its totient is φ = 89150400.

The previous prime is 222877997. The next prime is 222878011. The reversal of 222878000 is 878222.

It is a tau number, because it is divible by the number of its divisors (40).

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, 53720 + ... + 57719.

It is an arithmetic number, because the mean of its divisors is an integer number (13473096).

Almost surely, 2^222878000 is an apocalyptic number.

222878000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222878000 is an abundant number, since it is smaller than the sum of its proper divisors (316045840).

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

222878000 is a wasteful number, since it uses less digits than its factorization.

222878000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111462 (or 111446 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 222878000 is about 14929.0991020892. The cubic root of 222878000 is about 606.3020928065.

The spelling of 222878000 in words is "two hundred twenty-two million, eight hundred seventy-eight thousand".