289026290 has 32 divisors (see below), whose sum is σ = 625864320. Its totient is φ = 93878784.

The previous prime is 289026247. The next prime is 289026293. The reversal of 289026290 is 92620982.

289026290 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×289026290² = 167072392622328200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (289026293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107327 + ... + 109986.

It is an arithmetic number, because the mean of its divisors is an integer number (19558260).

Almost surely, 2^289026290 is an apocalyptic number.

289026290 is an abundant number, since it is smaller than the sum of its proper divisors (336838030).

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

289026290 is a wasteful number, since it uses less digits than its factorization.

289026290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217346.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 289026290 is about 17000.7732177098. The cubic root of 289026290 is about 661.1689492248.

The spelling of 289026290 in words is "two hundred eighty-nine million, twenty-six thousand, two hundred ninety".