494427820 has 24 divisors (see below), whose sum is σ = 1051444800. Its totient is φ = 195267072.

The previous prime is 494427797. The next prime is 494427821. The reversal of 494427820 is 28724494.

It is not an unprimeable number, because it can be changed into a prime (494427821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154885 + ... + 158044.

It is an arithmetic number, because the mean of its divisors is an integer number (43810200).

Almost surely, 2^494427820 is an apocalyptic number.

It is an amenable number.

494427820 is an abundant number, since it is smaller than the sum of its proper divisors (557016980).

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

494427820 is a wasteful number, since it uses less digits than its factorization.

494427820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313017 (or 313015 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 40.

The square root of 494427820 is about 22235.7329539640. The cubic root of 494427820 is about 790.7410767513.

The spelling of 494427820 in words is "four hundred ninety-four million, four hundred twenty-seven thousand, eight hundred twenty".