490740820 has 48 divisors (see below), whose sum is σ = 1053658368. Its totient is φ = 191945600.

The previous prime is 490740799. The next prime is 490740823. The reversal of 490740820 is 28047094.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (490740823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166197 + ... + 169123.

It is an arithmetic number, because the mean of its divisors is an integer number (21951216).

Almost surely, 2^490740820 is an apocalyptic number.

It is an amenable number.

490740820 is an abundant number, since it is smaller than the sum of its proper divisors (562917548).

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

490740820 is a wasteful number, since it uses less digits than its factorization.

490740820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3120 (or 3118 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 490740820 is about 22152.6707193512. The cubic root of 490740820 is about 788.7706243252.

The spelling of 490740820 in words is "four hundred ninety million, seven hundred forty thousand, eight hundred twenty".