289356 has 12 divisors (see below), whose sum is σ = 675192. Its totient is φ = 96448.

The previous prime is 289349. The next prime is 289361. The reversal of 289356 is 653982.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a nialpdrome in base 14.

It is a zygodrome in base 5.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12045 + ... + 12068.

It is an arithmetic number, because the mean of its divisors is an integer number (56266).

2²⁸⁹³⁵⁶ is an apocalyptic number.

It is an amenable number.

289356 is an abundant number, since it is smaller than the sum of its proper divisors (385836).

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

289356 is a wasteful number, since it uses less digits than its factorization.

289356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24120 (or 24118 counting only the distinct ones).

The product of its digits is 12960, while the sum is 33.

The square root of 289356 is about 537.9182093962. The cubic root of 289356 is about 66.1420265664.

Subtracting from 289356 its product of digits (12960), we obtain a triangular number (276396 = T₇₄₃).

The spelling of 289356 in words is "two hundred eighty-nine thousand, three hundred fifty-six".