290530 has 16 divisors (see below), whose sum is σ = 554040. Its totient is φ = 109312.

The previous prime is 290527. The next prime is 290531. The reversal of 290530 is 35092.

It can be written as a sum of positive squares in 4 ways, for example, as 227529 + 63001 = 477^2 + 251^2 .

It is a junction number, because it is equal to n+sod(n) for n = 290498 and 290507.

It is not an unprimeable number, because it can be changed into a prime (290531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 685 + ... + 1024.

2²⁹⁰⁵³⁰ is an apocalyptic number.

290530 is a deficient number, since it is larger than the sum of its proper divisors (263510).

290530 is a wasteful number, since it uses less digits than its factorization.

290530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1733.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 290530 is about 539.0083487294. The cubic root of 290530 is about 66.2313582295.

It can be divided in two parts, 290 and 530, that added together give a triangular number (820 = T₄₀).

The spelling of 290530 in words is "two hundred ninety thousand, five hundred thirty".