722249836 has 24 divisors (see below), whose sum is σ = 1575818496. Its totient is φ = 281395920.

The previous prime is 722249833. The next prime is 722249839. The reversal of 722249836 is 638942227.

It is an interprime number because it is at equal distance from previous prime (722249833) and next prime (722249839).

It is a junction number, because it is equal to n+sod(n) for n = 722249792 and 722249801.

It is not an unprimeable number, because it can be changed into a prime (722249833) 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, 1172176 + ... + 1172791.

It is an arithmetic number, because the mean of its divisors is an integer number (65659104).

Almost surely, 2^722249836 is an apocalyptic number.

It is an amenable number.

722249836 is an abundant number, since it is smaller than the sum of its proper divisors (853568660).

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

722249836 is a wasteful number, since it uses less digits than its factorization.

722249836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2344989 (or 2344987 counting only the distinct ones).

The product of its digits is 290304, while the sum is 43.

The square root of 722249836 is about 26874.7062495574. The cubic root of 722249836 is about 897.2135365486.

The spelling of 722249836 in words is "seven hundred twenty-two million, two hundred forty-nine thousand, eight hundred thirty-six".