222504280 has 16 divisors (see below), whose sum is σ = 500634720. Its totient is φ = 89001696.

The previous prime is 222504263. The next prime is 222504283. The reversal of 222504280 is 82405222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222504283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2781264 + ... + 2781343.

It is an arithmetic number, because the mean of its divisors is an integer number (31289670).

Almost surely, 2^222504280 is an apocalyptic number.

222504280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222504280 is an abundant number, since it is smaller than the sum of its proper divisors (278130440).

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

222504280 is a wasteful number, since it uses less digits than its factorization.

222504280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5562618 (or 5562614 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 222504280 is about 14916.5773554123. The cubic root of 222504280 is about 605.9630224290.

It can be divided in two parts, 222504 and 280, that added together give a square (222784 = 472²).

The spelling of 222504280 in words is "two hundred twenty-two million, five hundred four thousand, two hundred eighty".