72432222 has 8 divisors (see below), whose sum is σ = 144864456. Its totient is φ = 24144072.

The previous prime is 72432203. The next prime is 72432247. The reversal of 72432222 is 22223427.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

72432222 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 72432192 and 72432201.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6036013 + ... + 6036024.

It is an arithmetic number, because the mean of its divisors is an integer number (18108057).

Almost surely, 2^72432222 is an apocalyptic number.

72432222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

72432222 is a wasteful number, since it uses less digits than its factorization.

72432222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12072042.

The product of its digits is 2688, while the sum is 24.

The square root of 72432222 is about 8510.7121911154. The cubic root of 72432222 is about 416.8475654679.

Adding to 72432222 its reverse (22223427), we get a palindrome (94655649).

The spelling of 72432222 in words is "seventy-two million, four hundred thirty-two thousand, two hundred twenty-two".