222489792 has 126 divisors (see below), whose sum is σ = 741939588. Its totient is φ = 63560448.

The previous prime is 222489779. The next prime is 222489793. The reversal of 222489792 is 297984222.

It is a tau number, because it is divible by the number of its divisors (126).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (222489793) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 24283 + ... + 32165.

Almost surely, 2^222489792 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222489792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (370969794).

222489792 is an abundant number, since it is smaller than the sum of its proper divisors (519449796).

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

222489792 is a wasteful number, since it uses less digits than its factorization.

222489792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7915 (or 7895 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 222489792 is about 14916.0917133142. The cubic root of 222489792 is about 605.9498700486.

The spelling of 222489792 in words is "two hundred twenty-two million, four hundred eighty-nine thousand, seven hundred ninety-two".