222232240 has 20 divisors (see below), whose sum is σ = 516690144. Its totient is φ = 88892864.

The previous prime is 222232229. The next prime is 222232243. The reversal of 222232240 is 42232222.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (222232243) 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, 1388872 + ... + 1389031.

Almost surely, 2^222232240 is an apocalyptic number.

222232240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222232240 is an abundant number, since it is smaller than the sum of its proper divisors (294457904).

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

222232240 is a wasteful number, since it uses less digits than its factorization.

222232240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2777916 (or 2777910 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 222232240 is about 14907.4558526933. The cubic root of 222232240 is about 605.7159658958.

Adding to 222232240 its reverse (42232222), we get a palindrome (264464462).

The spelling of 222232240 in words is "two hundred twenty-two million, two hundred thirty-two thousand, two hundred forty".