222540 has 24 divisors (see below), whose sum is σ = 623280. Its totient is φ = 59328.

The previous prime is 222533. The next prime is 222553. The reversal of 222540 is 45222.

222540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1795 + ... + 1914.

It is an arithmetic number, because the mean of its divisors is an integer number (25970).

2²²²⁵⁴⁰ is an apocalyptic number.

222540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222540 is an abundant number, since it is smaller than the sum of its proper divisors (400740).

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

222540 is a wasteful number, since it uses less digits than its factorization.

222540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3721 (or 3719 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 222540 is about 471.7414546126. The cubic root of 222540 is about 60.5995447035.

Adding to 222540 its reverse (45222), we get a palindrome (267762).

The spelling of 222540 in words is "two hundred twenty-two thousand, five hundred forty".