289920066 has 8 divisors (see below), whose sum is σ = 579840144. Its totient is φ = 96640020.

The previous prime is 289920013. The next prime is 289920073. The reversal of 289920066 is 660029982.

289920066 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

289920066 is an admirable number.

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, 24160000 + ... + 24160011.

It is an arithmetic number, because the mean of its divisors is an integer number (72480018).

Almost surely, 2^289920066 is an apocalyptic number.

289920066 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

289920066 is a wasteful number, since it uses less digits than its factorization.

289920066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48320016.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 289920066 is about 17027.0392611282. The cubic root of 289920066 is about 661.8497740860.

The spelling of 289920066 in words is "two hundred eighty-nine million, nine hundred twenty thousand, sixty-six".