722722 has 48 divisors (see below), whose sum is σ = 1536192. Its totient is φ = 246240.

The previous prime is 722713. The next prime is 722723. The reversal of 722722 is 227227.

It is a Harshad number since it is a multiple of its sum of digits (22).

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 = 722693 and 722702.

It is not an unprimeable number, because it can be changed into a prime (722723) 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, 38029 + ... + 38047.

It is an arithmetic number, because the mean of its divisors is an integer number (32004).

2⁷²²⁷²² is an apocalyptic number.

722722 is an abundant number, since it is smaller than the sum of its proper divisors (813470).

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

722722 is a wasteful number, since it uses less digits than its factorization.

722722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71 (or 52 counting only the distinct ones).

The product of its digits is 784, while the sum is 22.

The square root of 722722 is about 850.1305782055. The cubic root of 722722 is about 89.7409008914.

Adding to 722722 its reverse (227227), we get a palindrome (949949).

It can be divided in two parts, 722 and 722, that added together give a square (1444 = 38²).

The spelling of 722722 in words is "seven hundred twenty-two thousand, seven hundred twenty-two", and thus it is an iban number.