494428 has 24 divisors (see below), whose sum is σ = 1000944. Its totient is φ = 211200.

The previous prime is 494413. The next prime is 494441. The reversal of 494428 is 824494.

It is a self number, because there is not a number n which added to its sum of digits gives 494428.

It is a congruent number.

It is an unprimeable number.

494428 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 7 ways as a sum of consecutive naturals, for example, 418 + ... + 1078.

It is an arithmetic number, because the mean of its divisors is an integer number (41706).

2⁴⁹⁴⁴²⁸ is an apocalyptic number.

It is an amenable number.

494428 is an abundant number, since it is smaller than the sum of its proper divisors (506516).

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

494428 is a wasteful number, since it uses less digits than its factorization.

494428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693 (or 691 counting only the distinct ones).

The product of its digits is 9216, while the sum is 31.

The square root of 494428 is about 703.1557437723. The cubic root of 494428 is about 79.0741172710.

The spelling of 494428 in words is "four hundred ninety-four thousand, four hundred twenty-eight".