290490 has 32 divisors (see below), whose sum is σ = 729216. Its totient is φ = 73920.

The previous prime is 290489. The next prime is 290497. The reversal of 290490 is 94092.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 290490.

It is not an unprimeable number, because it can be changed into a prime (290497) 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, 480 + ... + 900.

It is an arithmetic number, because the mean of its divisors is an integer number (22788).

2²⁹⁰⁴⁹⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 290490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (364608).

290490 is an abundant number, since it is smaller than the sum of its proper divisors (438726).

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

290490 is a wasteful number, since it uses less digits than its factorization.

290490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454.

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

The square root of 290490 is about 538.9712422755. The cubic root of 290490 is about 66.2283185252.

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

The spelling of 290490 in words is "two hundred ninety thousand, four hundred ninety".