289630 has 16 divisors (see below), whose sum is σ = 568944. Its totient is φ = 105280.

The previous prime is 289607. The next prime is 289637. The reversal of 289630 is 36982.

289630 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289637) 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 7 ways as a sum of consecutive naturals, for example, 1207 + ... + 1426.

It is an arithmetic number, because the mean of its divisors is an integer number (35559).

2²⁸⁹⁶³⁰ is an apocalyptic number.

289630 is a deficient number, since it is larger than the sum of its proper divisors (279314).

289630 is a wasteful number, since it uses less digits than its factorization.

289630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2651.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 289630 is about 538.1728346916. The cubic root of 289630 is about 66.1628972791.

It can be divided in two parts, 2896 and 30, that added together give a triangular number (2926 = T₇₆).

The spelling of 289630 in words is "two hundred eighty-nine thousand, six hundred thirty".