222455000 has 40 divisors (see below), whose sum is σ = 521223780. Its totient is φ = 88980000.

The previous prime is 222454993. The next prime is 222455003. The reversal of 222455000 is 554222.

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

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222455003) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 17246 + ... + 27245.

Almost surely, 2^222455000 is an apocalyptic number.

222455000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222455000 is an abundant number, since it is smaller than the sum of its proper divisors (298768780).

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

222455000 is an equidigital number, since it uses as much as digits as its factorization.

222455000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44517 (or 44498 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 222455000 is about 14914.9254104739. The cubic root of 222455000 is about 605.9182831209.

The spelling of 222455000 in words is "two hundred twenty-two million, four hundred fifty-five thousand".