490209920 has 32 divisors (see below), whose sum is σ = 1171909620. Its totient is φ = 196083712.

The previous prime is 490209917. The next prime is 490209983. The reversal of 490209920 is 29902094.

It can be written as a sum of positive squares in 2 ways, for example, as 460703296 + 29506624 = 21464^2 + 5432^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 382337 + ... + 383616.

Almost surely, 2^490209920 is an apocalyptic number.

490209920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

490209920 is an abundant number, since it is smaller than the sum of its proper divisors (681699700).

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

490209920 is an equidigital number, since it uses as much as digits as its factorization.

490209920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765972 (or 765960 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 490209920 is about 22140.6847229258. The cubic root of 490209920 is about 788.4860821207.

The spelling of 490209920 in words is "four hundred ninety million, two hundred nine thousand, nine hundred twenty".