722020726 has 16 divisors (see below), whose sum is σ = 1255184640. Its totient is φ = 305078760.

The previous prime is 722020709. The next prime is 722020751. The reversal of 722020726 is 627020227.

It is a junction number, because it is equal to n+sod(n) for n = 722020694 and 722020703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 362196 + ... + 364183.

It is an arithmetic number, because the mean of its divisors is an integer number (78449040).

Almost surely, 2^722020726 is an apocalyptic number.

722020726 is a deficient number, since it is larger than the sum of its proper divisors (533163914).

722020726 is a wasteful number, since it uses less digits than its factorization.

722020726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726459.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 722020726 is about 26870.4433532460. The cubic root of 722020726 is about 897.1186560226.

The spelling of 722020726 in words is "seven hundred twenty-two million, twenty thousand, seven hundred twenty-six".