490840000 has 140 divisors (see below), whose sum is σ = 1391791984. Its totient is φ = 168192000.

The previous prime is 490839989. The next prime is 490840001. The reversal of 490840000 is 48094.

It is a tau number, because it is divible by the number of its divisors (140).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (490840001) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 279124 + ... + 280876.

Almost surely, 2^490840000 is an apocalyptic number.

490840000 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 490840000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (695895992).

490840000 is an abundant number, since it is smaller than the sum of its proper divisors (900951984).

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

490840000 is an equidigital number, since it uses as much as digits as its factorization.

490840000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1792 (or 1767 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 490840000 is about 22154.9091625310. The cubic root of 490840000 is about 788.8237582795.

Adding to 490840000 its reverse (48094), we get a palindrome (490888094).

The spelling of 490840000 in words is "four hundred ninety million, eight hundred forty thousand".