222012432 has 60 divisors (see below), whose sum is σ = 638134380. Its totient is φ = 72002304.

The previous prime is 222012409. The next prime is 222012433. The reversal of 222012432 is 234210222.

222012432 is a `hidden beast` number, since 2 + 220 + 12 + 432 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 118461456 + 103550976 = 10884^2 + 10176^2 .

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

It is not an unprimeable number, because it can be changed into a prime (222012433) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15507 + ... + 26162.

It is an arithmetic number, because the mean of its divisors is an integer number (10635573).

Almost surely, 2^222012432 is an apocalyptic number.

It is an amenable number.

222012432 is an abundant number, since it is smaller than the sum of its proper divisors (416121948).

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

222012432 is a wasteful number, since it uses less digits than its factorization.

222012432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41720 (or 41711 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 222012432 is about 14900.0816105148. The cubic root of 222012432 is about 605.5161971982.

Adding to 222012432 its reverse (234210222), we get a palindrome (456222654).

The spelling of 222012432 in words is "two hundred twenty-two million, twelve thousand, four hundred thirty-two".