722409120 has 144 divisors (see below), whose sum is σ = 2544901632. Its totient is φ = 186416640.

The previous prime is 722409097. The next prime is 722409161. The reversal of 722409120 is 21904227.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36549 + ... + 52731.

It is an arithmetic number, because the mean of its divisors is an integer number (17672928).

Almost surely, 2^722409120 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 722409120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1272450816).

722409120 is an abundant number, since it is smaller than the sum of its proper divisors (1822492512).

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

722409120 is a wasteful number, since it uses less digits than its factorization.

722409120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16235 (or 16224 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 722409120 is about 26877.6695418334. The cubic root of 722409120 is about 897.2794884530.

The spelling of 722409120 in words is "seven hundred twenty-two million, four hundred nine thousand, one hundred twenty".