289026 has 12 divisors (see below), whose sum is σ = 626262. Its totient is φ = 96336.

The previous prime is 289021. The next prime is 289031. The reversal of 289026 is 620982.

It is an interprime number because it is at equal distance from previous prime (289021) and next prime (289031).

It can be written as a sum of positive squares in only one way, i.e., 251001 + 38025 = 501^2 + 195^2 .

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (289021) by changing a digit.

289026 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 5 ways as a sum of consecutive naturals, for example, 8011 + ... + 8046.

2²⁸⁹⁰²⁶ is an apocalyptic number.

289026 is an abundant number, since it is smaller than the sum of its proper divisors (337236).

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

289026 is a wasteful number, since it uses less digits than its factorization.

289026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16065 (or 16062 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 289026 is about 537.6113838080. The cubic root of 289026 is about 66.1168728093.

It can be divided in two parts, 2890 and 26, that added together give a square (2916 = 54²).

The spelling of 289026 in words is "two hundred eighty-nine thousand, twenty-six".