290020 has 24 divisors (see below), whose sum is σ = 645624. Its totient is φ = 109056.

The previous prime is 290011. The next prime is 290021. The reversal of 290020 is 20092.

It can be written as a sum of positive squares in 4 ways, for example, as 11236 + 278784 = 106^2 + 528^2 .

It is a super-2 number, since 2×290020² = 168223200800, which contains 22 as substring.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (290021) 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, 87 + ... + 766.

It is an arithmetic number, because the mean of its divisors is an integer number (26901).

2²⁹⁰⁰²⁰ is an apocalyptic number.

290020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

290020 is an abundant number, since it is smaller than the sum of its proper divisors (355604).

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

290020 is a wasteful number, since it uses less digits than its factorization.

290020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879 (or 877 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 290020 is about 538.5350499271. The cubic root of 290020 is about 66.1925810788.

The spelling of 290020 in words is "two hundred ninety thousand, twenty".