289528216 has 16 divisors (see below), whose sum is σ = 548241840. Its totient is φ = 143330400.

The previous prime is 289528181. The next prime is 289528223. The reversal of 289528216 is 612825982.

It is a super-4 number, since 4×289528216⁴ (a number of 35 digits) contains 4444 as substring.

It is a congruent 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, 178356 + ... + 179971.

It is an arithmetic number, because the mean of its divisors is an integer number (34265115).

Almost surely, 2^289528216 is an apocalyptic number.

It is an amenable number.

289528216 is a deficient number, since it is larger than the sum of its proper divisors (258713624).

289528216 is a wasteful number, since it uses less digits than its factorization.

289528216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358434 (or 358430 counting only the distinct ones).

The product of its digits is 138240, while the sum is 43.

The square root of 289528216 is about 17015.5286723628. The cubic root of 289528216 is about 661.5514587980.

The spelling of 289528216 in words is "two hundred eighty-nine million, five hundred twenty-eight thousand, two hundred sixteen".