494873820 has 192 divisors, whose sum is σ = 1780531200. Its totient is φ = 111767040.

The previous prime is 494873767. The next prime is 494873831. The reversal of 494873820 is 28378494.

494873820 is a `hidden beast` number, since 494 + 87 + 3 + 82 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 335685 + ... + 337155.

It is an arithmetic number, because the mean of its divisors is an integer number (9273600).

Almost surely, 2^494873820 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 494873820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (890265600).

494873820 is an abundant number, since it is smaller than the sum of its proper divisors (1285657380).

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

494873820 is a wasteful number, since it uses less digits than its factorization.

494873820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1585 (or 1577 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 494873820 is about 22245.7595959320. The cubic root of 494873820 is about 790.9787686965.

The spelling of 494873820 in words is "four hundred ninety-four million, eight hundred seventy-three thousand, eight hundred twenty".