289368216 has 24 divisors (see below), whose sum is σ = 783705780. Its totient is φ = 96456048.

The previous prime is 289368193. The next prime is 289368217. The reversal of 289368216 is 612863982.

289368216 is a `hidden beast` number, since 289 + 368 + 2 + 1 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289368217) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2009430 + ... + 2009573.

Almost surely, 2^289368216 is an apocalyptic number.

It is an amenable number.

289368216 is an abundant number, since it is smaller than the sum of its proper divisors (494337564).

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

289368216 is a wasteful number, since it uses less digits than its factorization.

289368216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4019015 (or 4019008 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 289368216 is about 17010.8264349502. The cubic root of 289368216 is about 661.4295734554.

The spelling of 289368216 in words is "two hundred eighty-nine million, three hundred sixty-eight thousand, two hundred sixteen".