722149344 has 144 divisors (see below), whose sum is σ = 2434094208. Its totient is φ = 206312832.

The previous prime is 722149343. The next prime is 722149357. The reversal of 722149344 is 443941227.

722149344 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

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

It is a junction number, because it is equal to n+sod(n) for n = 722149299 and 722149308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722149343) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47799 + ... + 61065.

It is an arithmetic number, because the mean of its divisors is an integer number (16903432).

Almost surely, 2^722149344 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 722149344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1217047104).

722149344 is an abundant number, since it is smaller than the sum of its proper divisors (1711944864).

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

722149344 is a wasteful number, since it uses less digits than its factorization.

722149344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13299 (or 13279 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 722149344 is about 26872.8365454784. The cubic root of 722149344 is about 897.1719226175.

It can be divided in two parts, 7221 and 49344, that added together give a palindrome (56565).

The spelling of 722149344 in words is "seven hundred twenty-two million, one hundred forty-nine thousand, three hundred forty-four".