222006890 has 32 divisors (see below), whose sum is σ = 472452480. Its totient is φ = 73491264.

The previous prime is 222006857. The next prime is 222006901. The reversal of 222006890 is 98600222.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52652 + ... + 56711.

It is an arithmetic number, because the mean of its divisors is an integer number (14764140).

Almost surely, 2^222006890 is an apocalyptic number.

222006890 is an abundant number, since it is smaller than the sum of its proper divisors (250445590).

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

222006890 is a wasteful number, since it uses less digits than its factorization.

222006890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109406.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 222006890 is about 14899.8956372184. The cubic root of 222006890 is about 605.5111587436.

The spelling of 222006890 in words is "two hundred twenty-two million, six thousand, eight hundred ninety".