490628940 has 144 divisors (see below), whose sum is σ = 1452036096. Its totient is φ = 123742080.

The previous prime is 490628927. The next prime is 490628977. The reversal of 490628940 is 49826094.

It is a junction number, because it is equal to n+sod(n) for n = 490628892 and 490628901.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3863157 + ... + 3863283.

It is an arithmetic number, because the mean of its divisors is an integer number (10083584).

Almost surely, 2^490628940 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 490628940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (726018048).

490628940 is an abundant number, since it is smaller than the sum of its proper divisors (961407156).

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

490628940 is a wasteful number, since it uses less digits than its factorization.

490628940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268 (or 235 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 490628940 is about 22150.1453719835. The cubic root of 490628940 is about 788.7106779740.

The spelling of 490628940 in words is "four hundred ninety million, six hundred twenty-eight thousand, nine hundred forty".