490666320 has 60 divisors (see below), whose sum is σ = 1647823476. Its totient is φ = 130844160.

The previous prime is 490666289. The next prime is 490666321. The reversal of 490666320 is 23666094.

It can be written as a sum of positive squares in 2 ways, for example, as 327031056 + 163635264 = 18084^2 + 12792^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (490666321) 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 11 ways as a sum of consecutive naturals, for example, 340021 + ... + 341460.

Almost surely, 2^490666320 is an apocalyptic number.

490666320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

490666320 is an abundant number, since it is smaller than the sum of its proper divisors (1157157156).

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

490666320 is a wasteful number, since it uses less digits than its factorization.

490666320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681500 (or 681491 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The square root of 490666320 is about 22150.9891426997. The cubic root of 490666320 is about 788.7307075415.

The spelling of 490666320 in words is "four hundred ninety million, six hundred sixty-six thousand, three hundred twenty".