722522422 has 8 divisors (see below), whose sum is σ = 1093912776. Its totient is φ = 357884832.

The previous prime is 722522393. The next prime is 722522429. The reversal of 722522422 is 224225227.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722522429) 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, 1687923 + ... + 1688350.

It is an arithmetic number, because the mean of its divisors is an integer number (136739097).

Almost surely, 2^722522422 is an apocalyptic number.

722522422 is a deficient number, since it is larger than the sum of its proper divisors (371390354).

722522422 is a wasteful number, since it uses less digits than its factorization.

722522422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3376382.

The product of its digits is 8960, while the sum is 28.

The square root of 722522422 is about 26879.7771940171. Note that the first 3 decimals coincide. The cubic root of 722522422 is about 897.3263955048.

Adding to 722522422 its reverse (224225227), we get a palindrome (946747649).

The spelling of 722522422 in words is "seven hundred twenty-two million, five hundred twenty-two thousand, four hundred twenty-two".