722447236 has 24 divisors (see below), whose sum is σ = 1445463936. Its totient is φ = 309498240.

The previous prime is 722447233. The next prime is 722447239. The reversal of 722447236 is 632744227.

722447236 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (722447233) and next prime (722447239).

It is a junction number, because it is equal to n+sod(n) for n = 722447195 and 722447204.

It is not an unprimeable number, because it can be changed into a prime (722447233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133740 + ... + 139036.

It is an arithmetic number, because the mean of its divisors is an integer number (60227664).

Almost surely, 2^722447236 is an apocalyptic number.

It is an amenable number.

722447236 is an abundant number, since it is smaller than the sum of its proper divisors (723016700).

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

722447236 is a wasteful number, since it uses less digits than its factorization.

722447236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10179 (or 10177 counting only the distinct ones).

The product of its digits is 112896, while the sum is 37.

The square root of 722447236 is about 26878.3785969318. The cubic root of 722447236 is about 897.2952690324.

The spelling of 722447236 in words is "seven hundred twenty-two million, four hundred forty-seven thousand, two hundred thirty-six".