724722 has 24 divisors (see below), whose sum is σ = 1511664. Its totient is φ = 231504.

The previous prime is 724721. The next prime is 724723. The reversal of 724722 is 227427.

It is an interprime number because it is at equal distance from previous prime (724721) and next prime (724723).

It is a junction number, because it is equal to n+sod(n) for n = 724692 and 724701.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 724722.

It is not an unprimeable number, because it can be changed into a prime (724721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13648 + ... + 13700.

It is an arithmetic number, because the mean of its divisors is an integer number (62986).

2⁷²⁴⁷²² is an apocalyptic number.

724722 is an abundant number, since it is smaller than the sum of its proper divisors (786942).

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

724722 is a wasteful number, since it uses less digits than its factorization.

724722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154 (or 101 counting only the distinct ones).

The product of its digits is 1568, while the sum is 24.

The square root of 724722 is about 851.3060554231. The cubic root of 724722 is about 89.8236051192.

The spelling of 724722 in words is "seven hundred twenty-four thousand, seven hundred twenty-two", and thus it is an iban number.