708428 has 12 divisors (see below), whose sum is σ = 1416912. Its totient is φ = 303600.

The previous prime is 708403. The next prime is 708437. The reversal of 708428 is 824807.

708428 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 708428.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 708428.

It is an unprimeable number.

708428 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 3 ways as a sum of consecutive naturals, for example, 12623 + ... + 12678.

It is an arithmetic number, because the mean of its divisors is an integer number (118076).

2⁷⁰⁸⁴²⁸ is an apocalyptic number.

It is an amenable number.

708428 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

708428 is a wasteful number, since it uses less digits than its factorization.

708428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25312 (or 25310 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 708428 is about 841.6816500316. The cubic root of 708428 is about 89.1453250037.

The spelling of 708428 in words is "seven hundred eight thousand, four hundred twenty-eight".