72205422 has 8 divisors (see below), whose sum is σ = 144410856. Its totient is φ = 24068472.

The previous prime is 72205391. The next prime is 72205429. The reversal of 72205422 is 22450227.

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

72205422 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 72205392 and 72205401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72205429) 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 3 ways as a sum of consecutive naturals, for example, 6017113 + ... + 6017124.

It is an arithmetic number, because the mean of its divisors is an integer number (18051357).

Almost surely, 2^72205422 is an apocalyptic number.

72205422 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.

72205422 is a wasteful number, since it uses less digits than its factorization.

72205422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12034242.

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 72205422 is about 8497.3773601035. The cubic root of 72205422 is about 416.4120324369.

Adding to 72205422 its reverse (22450227), we get a palindrome (94655649).

It can be divided in two parts, 72205 and 422, that added together give a palindrome (72627).

The spelling of 72205422 in words is "seventy-two million, two hundred five thousand, four hundred twenty-two".