722604428 has 96 divisors (see below), whose sum is σ = 1650915840. Its totient is φ = 268738560.

The previous prime is 722604419. The next prime is 722604479. The reversal of 722604428 is 824406227.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1126988 + ... + 1127628.

It is an arithmetic number, because the mean of its divisors is an integer number (17197040).

Almost surely, 2^722604428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 722604428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (825457920).

722604428 is an abundant number, since it is smaller than the sum of its proper divisors (928311412).

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

722604428 is a wasteful number, since it uses less digits than its factorization.

722604428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847 (or 845 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 35.

The square root of 722604428 is about 26881.3025726061. The cubic root of 722604428 is about 897.3603429470.

The spelling of 722604428 in words is "seven hundred twenty-two million, six hundred four thousand, four hundred twenty-eight".