490447872 has 198 divisors, whose sum is σ = 1490694998. Its totient is φ = 161243136.

The previous prime is 490447861. The next prime is 490447873. The reversal of 490447872 is 278744094.

It can be written as a sum of positive squares in only one way, i.e., 429981696 + 60466176 = 20736^2 + 7776^2 .

It is not an unprimeable number, because it can be changed into a prime (490447873) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6718428 + ... + 6718500.

Almost surely, 2^490447872 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 490447872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (745347499).

490447872 is an abundant number, since it is smaller than the sum of its proper divisors (1000247126).

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

490447872 is an frugal number, since it uses more digits than its factorization.

490447872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117 (or 78 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The square root of 490447872 is about 22146.0577078630. The cubic root of 490447872 is about 788.6136407325.

The spelling of 490447872 in words is "four hundred ninety million, four hundred forty-seven thousand, eight hundred seventy-two".