722764189728 has 480 divisors, whose sum is σ = 2585989929600. Its totient is φ = 193429057536.

The previous prime is 722764189717. The next prime is 722764189733. The reversal of 722764189728 is 827981467227.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

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 79 ways as a sum of consecutive naturals, for example, 30669726 + ... + 30693282.

It is an arithmetic number, because the mean of its divisors is an integer number (5387479020).

Almost surely, 2^722764189728 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 722764189728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1292994964800).

722764189728 is an abundant number, since it is smaller than the sum of its proper divisors (1863225739872).

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

722764189728 is a wasteful number, since it uses less digits than its factorization.

722764189728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23694 (or 23677 counting only the distinct ones).

The product of its digits is 37933056, while the sum is 63.

The spelling of 722764189728 in words is "seven hundred twenty-two billion, seven hundred sixty-four million, one hundred eighty-nine thousand, seven hundred twenty-eight".