490128812 has 24 divisors (see below), whose sum is σ = 875765520. Its totient is φ = 239943680.

The previous prime is 490128803. The next prime is 490128823. The reversal of 490128812 is 218821094.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56612 + ... + 64692.

It is an arithmetic number, because the mean of its divisors is an integer number (36490230).

Almost surely, 2^490128812 is an apocalyptic number.

It is an amenable number.

490128812 is a deficient number, since it is larger than the sum of its proper divisors (385636708).

490128812 is a wasteful number, since it uses less digits than its factorization.

490128812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8401 (or 8399 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 490128812 is about 22138.8529964856. The cubic root of 490128812 is about 788.4425932302.

The spelling of 490128812 in words is "four hundred ninety million, one hundred twenty-eight thousand, eight hundred twelve".