289667056 has 20 divisors (see below), whose sum is σ = 641405872. Its totient is φ = 124142976.

The previous prime is 289667039. The next prime is 289667057. The reversal of 289667056 is 650766982.

It is a happy number.

It is a super-3 number, since 3×289667056³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289667057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1293045 + ... + 1293268.

Almost surely, 2^289667056 is an apocalyptic number.

It is an amenable number.

289667056 is an abundant number, since it is smaller than the sum of its proper divisors (351738816).

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

289667056 is a wasteful number, since it uses less digits than its factorization.

289667056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2586328 (or 2586322 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 49.

The square root of 289667056 is about 17019.6079860848. The cubic root of 289667056 is about 661.6571884202.

The spelling of 289667056 in words is "two hundred eighty-nine million, six hundred sixty-seven thousand, fifty-six".