490637268 has 72 divisors (see below), whose sum is σ = 1356657120. Its totient is φ = 148272960.

The previous prime is 490637263. The next prime is 490637281. The reversal of 490637268 is 862736094.

490637268 is a `hidden beast` number, since 4 + 9 + 0 + 637 + 2 + 6 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (490637263) 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 23 ways as a sum of consecutive naturals, for example, 164446 + ... + 167402.

It is an arithmetic number, because the mean of its divisors is an integer number (18842460).

Almost surely, 2^490637268 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 490637268, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (678328560).

490637268 is an abundant number, since it is smaller than the sum of its proper divisors (866019852).

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

490637268 is a wasteful number, since it uses less digits than its factorization.

490637268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3397 (or 3392 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The square root of 490637268 is about 22150.3333609226. Note that the first 4 decimals coincide. The cubic root of 490637268 is about 788.7151405083.

The spelling of 490637268 in words is "four hundred ninety million, six hundred thirty-seven thousand, two hundred sixty-eight".