492820 has 24 divisors (see below), whose sum is σ = 1061928. Its totient is φ = 192000.

The previous prime is 492799. The next prime is 492839. The reversal of 492820 is 28294.

It can be written as a sum of positive squares in 4 ways, for example, as 24964 + 467856 = 158^2 + 684^2 .

It is a congruent number.

It is an unprimeable number.

492820 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 7 ways as a sum of consecutive naturals, for example, 520 + ... + 1120.

It is an arithmetic number, because the mean of its divisors is an integer number (44247).

2⁴⁹²⁸²⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 492820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (530964).

492820 is an abundant number, since it is smaller than the sum of its proper divisors (569108).

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

492820 is a wasteful number, since it uses less digits than its factorization.

492820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651 (or 649 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 492820 is about 702.0113959189. The cubic root of 492820 is about 78.9883014243.

The spelling of 492820 in words is "four hundred ninety-two thousand, eight hundred twenty".