494120640 has 336 divisors, whose sum is σ = 1807841952. Its totient is φ = 113639424.

The previous prime is 494120609. The next prime is 494120659. The reversal of 494120640 is 46021494.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 494120598 and 494120607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3606652 + ... + 3606788.

It is an arithmetic number, because the mean of its divisors is an integer number (5380482).

Almost surely, 2^494120640 is an apocalyptic number.

494120640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 494120640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (903920976).

494120640 is an abundant number, since it is smaller than the sum of its proper divisors (1313721312).

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

494120640 is a wasteful number, since it uses less digits than its factorization.

494120640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204 (or 177 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 494120640 is about 22228.8245303255. The cubic root of 494120640 is about 790.5772846164.

The spelling of 494120640 in words is "four hundred ninety-four million, one hundred twenty thousand, six hundred forty".