722480 has 40 divisors (see below), whose sum is σ = 1834704. Its totient is φ = 262400.

The previous prime is 722479. The next prime is 722489. The reversal of 722480 is 84227.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (722489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 470 + ... + 1290.

2⁷²²⁴⁸⁰ 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 722480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (917352).

722480 is an abundant number, since it is smaller than the sum of its proper divisors (1112224).

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

722480 is a wasteful number, since it uses less digits than its factorization.

722480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 845 (or 839 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 722480 is about 849.9882352127. The cubic root of 722480 is about 89.7308833362.

It can be divided in two parts, 72 and 2480, that added together give a palindrome (2552).

The spelling of 722480 in words is "seven hundred twenty-two thousand, four hundred eighty".