491828 has 6 divisors (see below), whose sum is σ = 860706. Its totient is φ = 245912.

The previous prime is 491819. The next prime is 491833. The reversal of 491828 is 828194.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 487204 + 4624 = 698^2 + 68^2 .

It is a junction number, because it is equal to n+sod(n) for n = 491794 and 491803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61475 + ... + 61482.

It is an arithmetic number, because the mean of its divisors is an integer number (143451).

2⁴⁹¹⁸²⁸ is an apocalyptic number.

It is an amenable number.

491828 is a deficient number, since it is larger than the sum of its proper divisors (368878).

491828 is a wasteful number, since it uses less digits than its factorization.

491828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122961 (or 122959 counting only the distinct ones).

The product of its digits is 4608, while the sum is 32.

The square root of 491828 is about 701.3044987735. The cubic root of 491828 is about 78.9352671666.

The spelling of 491828 in words is "four hundred ninety-one thousand, eight hundred twenty-eight".