222442000 has 80 divisors (see below), whose sum is σ = 586819584. Its totient is φ = 80880000.

The previous prime is 222441971. The next prime is 222442027. The reversal of 222442000 is 244222.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 16945 + ... + 27055.

Almost surely, 2^222442000 is an apocalyptic number.

222442000 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 222442000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293409792).

222442000 is an abundant number, since it is smaller than the sum of its proper divisors (364377584).

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

222442000 is a wasteful number, since it uses less digits than its factorization.

222442000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10145 (or 10129 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 222442000 is about 14914.4895990443. The cubic root of 222442000 is about 605.9064798482.

Adding to 222442000 its reverse (244222), we get a palindrome (222686222).

The spelling of 222442000 in words is "two hundred twenty-two million, four hundred forty-two thousand".