222340500 has 72 divisors (see below), whose sum is σ = 701424360. Its totient is φ = 59289600.

The previous prime is 222340493. The next prime is 222340507. The reversal of 222340500 is 5043222.

It is an interprime number because it is at equal distance from previous prime (222340493) and next prime (222340507).

It can be written as a sum of positive squares in 4 ways, for example, as 16016004 + 206324496 = 4002^2 + 14364^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222340507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20205 + ... + 29204.

It is an arithmetic number, because the mean of its divisors is an integer number (9742005).

Almost surely, 2^222340500 is an apocalyptic number.

222340500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222340500 is an abundant number, since it is smaller than the sum of its proper divisors (479083860).

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

222340500 is a wasteful number, since it uses less digits than its factorization.

222340500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49434 (or 49419 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 222340500 is about 14911.0864795292. The cubic root of 222340500 is about 605.8143077102.

Adding to 222340500 its reverse (5043222), we get a palindrome (227383722).

The spelling of 222340500 in words is "two hundred twenty-two million, three hundred forty thousand, five hundred".