722742432 has 96 divisors (see below), whose sum is σ = 2043740160. Its totient is φ = 222984960.

The previous prime is 722742421. The next prime is 722742439. The reversal of 722742432 is 234247227.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 722742393 and 722742402.

It is not an unprimeable number, because it can be changed into a prime (722742439) 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 15 ways as a sum of consecutive naturals, for example, 63169 + ... + 73727.

It is an arithmetic number, because the mean of its divisors is an integer number (21288960).

Almost surely, 2^722742432 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 722742432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1021870080).

722742432 is an abundant number, since it is smaller than the sum of its proper divisors (1320997728).

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

722742432 is a wasteful number, since it uses less digits than its factorization.

722742432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10626 (or 10618 counting only the distinct ones).

The product of its digits is 37632, while the sum is 33.

The square root of 722742432 is about 26883.8693643605. The cubic root of 722742432 is about 897.4174656867.

Adding to 722742432 its reverse (234247227), we get a palindrome (956989659).

The spelling of 722742432 in words is "seven hundred twenty-two million, seven hundred forty-two thousand, four hundred thirty-two".