722436736 has 32 divisors (see below), whose sum is σ = 1644835680. Its totient is φ = 309615360.

The previous prime is 722436733. The next prime is 722436761. The reversal of 722436736 is 637634227.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (722436733) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 402250 + ... + 404041.

It is an arithmetic number, because the mean of its divisors is an integer number (51401115).

Almost surely, 2^722436736 is an apocalyptic number.

It is an amenable number.

722436736 is an abundant number, since it is smaller than the sum of its proper divisors (922398944).

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

722436736 is an equidigital number, since it uses as much as digits as its factorization.

722436736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806312 (or 806300 counting only the distinct ones).

The product of its digits is 254016, while the sum is 40.

The square root of 722436736 is about 26878.1832719401. The cubic root of 722436736 is about 897.2909219348.

The spelling of 722436736 in words is "seven hundred twenty-two million, four hundred thirty-six thousand, seven hundred thirty-six".