304722 has 56 divisors (see below), whose sum is σ = 786960. Its totient is φ = 87480.

The previous prime is 304709. The next prime is 304723. The reversal of 304722 is 227403.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 304695 and 304704.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 304722.

It is not an unprimeable number, because it can be changed into a prime (304723) by changing a digit.

304722 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 16029 + ... + 16047.

2³⁰⁴⁷²² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 304722, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (393480).

304722 is an abundant number, since it is smaller than the sum of its proper divisors (482238).

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

304722 is a wasteful number, since it uses less digits than its factorization.

304722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50 (or 35 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 304722 is about 552.0163041070. The cubic root of 304722 is about 67.2926973273.

Subtracting from 304722 its sum of digits (18), we obtain a square (304704 = 552²).

The spelling of 304722 in words is "three hundred four thousand, seven hundred twenty-two", and thus it is an iban number.