222918432 has 48 divisors (see below), whose sum is σ = 638360352. Its totient is φ = 67550720.

The previous prime is 222918383. The next prime is 222918439. The reversal of 222918432 is 234819222.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 222918393 and 222918402.

It is not an unprimeable number, because it can be changed into a prime (222918439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104493 + ... + 106604.

It is an arithmetic number, because the mean of its divisors is an integer number (13299174).

Almost surely, 2^222918432 is an apocalyptic number.

222918432 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

222918432 is an abundant number, since it is smaller than the sum of its proper divisors (415441920).

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

222918432 is a wasteful number, since it uses less digits than its factorization.

222918432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211121 (or 211113 counting only the distinct ones).

The product of its digits is 13824, while the sum is 33.

The square root of 222918432 is about 14930.4531746361. The cubic root of 222918432 is about 606.3387534071.

It can be divided in two parts, 2229184 and 32, that added together give a triangular number (2229216 = T₂₁₁₁).

The spelling of 222918432 in words is "two hundred twenty-two million, nine hundred eighteen thousand, four hundred thirty-two".