722120236 has 12 divisors (see below), whose sum is σ = 1318654512. Its totient is φ = 345361808.

The previous prime is 722120227. The next prime is 722120239. The reversal of 722120236 is 632021227.

It is a self number, because there is not a number n which added to its sum of digits gives 722120236.

It is not an unprimeable number, because it can be changed into a prime (722120239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3924475 + ... + 3924658.

It is an arithmetic number, because the mean of its divisors is an integer number (109887876).

Almost surely, 2^722120236 is an apocalyptic number.

It is an amenable number.

722120236 is a deficient number, since it is larger than the sum of its proper divisors (596534276).

722120236 is a wasteful number, since it uses less digits than its factorization.

722120236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7849160 (or 7849158 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 722120236 is about 26872.2949522366. The cubic root of 722120236 is about 897.1598682175.

Subtracting from 722120236 its reverse (632021227), we obtain a palindrome (90099009).

The spelling of 722120236 in words is "seven hundred twenty-two million, one hundred twenty thousand, two hundred thirty-six".