704228 has 18 divisors (see below), whose sum is σ = 1434006. Its totient is φ = 301728.

The previous prime is 704219. The next prime is 704233. The reversal of 704228 is 822407.

It can be written as a sum of positive squares in only one way, i.e., 550564 + 153664 = 742^2 + 392^2 .

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

704228 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 5 ways as a sum of consecutive naturals, for example, 1601 + ... + 1992.

It is an arithmetic number, because the mean of its divisors is an integer number (79667).

2⁷⁰⁴²²⁸ is an apocalyptic number.

It is an amenable number.

704228 is an abundant number, since it is smaller than the sum of its proper divisors (729778).

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

704228 is a wasteful number, since it uses less digits than its factorization.

704228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3611 (or 3602 counting only the distinct ones).

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

The square root of 704228 is about 839.1829359562. The cubic root of 704228 is about 88.9688061366.

The spelling of 704228 in words is "seven hundred four thousand, two hundred twenty-eight".