722502 has 48 divisors (see below), whose sum is σ = 1769040. Its totient is φ = 211200.

The previous prime is 722489. The next prime is 722509. The reversal of 722502 is 205227.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722509) 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, 8074 + ... + 8162.

It is an arithmetic number, because the mean of its divisors is an integer number (36855).

2⁷²²⁵⁰² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 722502, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (884520).

722502 is an abundant number, since it is smaller than the sum of its proper divisors (1046538).

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

722502 is a wasteful number, since it uses less digits than its factorization.

722502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149 (or 146 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 18.

The square root of 722502 is about 850.0011764698. The cubic root of 722502 is about 89.7317941155.

Adding to 722502 its reverse (205227), we get a palindrome (927729).

The spelling of 722502 in words is "seven hundred twenty-two thousand, five hundred two".