490290 has 32 divisors (see below), whose sum is σ = 1200960. Its totient is φ = 128064.

The previous prime is 490283. The next prime is 490309. The reversal of 490290 is 92094.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 490290.

It is an unprimeable number.

490290 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1632 + ... + 1908.

It is an arithmetic number, because the mean of its divisors is an integer number (37530).

2⁴⁹⁰²⁹⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 490290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (600480).

490290 is an abundant number, since it is smaller than the sum of its proper divisors (710670).

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

490290 is a wasteful number, since it uses less digits than its factorization.

490290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 490290 is about 700.2071122175. The cubic root of 490290 is about 78.8529015107.

It can be divided in two parts, 490 and 290, that added together give a triangular number (780 = T₃₉).

The spelling of 490290 in words is "four hundred ninety thousand, two hundred ninety".