494078820 has 96 divisors (see below), whose sum is σ = 1469010816. Its totient is φ = 123648000.

The previous prime is 494078791. The next prime is 494078821. The reversal of 494078820 is 28870494.

It is a super-2 number, since 2×494078820² = 488227760745184800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (494078821) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 704470 + ... + 705170.

It is an arithmetic number, because the mean of its divisors is an integer number (15302196).

Almost surely, 2^494078820 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 494078820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (734505408).

494078820 is an abundant number, since it is smaller than the sum of its proper divisors (974931996).

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

494078820 is a wasteful number, since it uses less digits than its factorization.

494078820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1421 (or 1419 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 494078820 is about 22227.8838398980. The cubic root of 494078820 is about 790.5549804312.

The spelling of 494078820 in words is "four hundred ninety-four million, seventy-eight thousand, eight hundred twenty".