289073281 has 8 divisors (see below), whose sum is σ = 331196544. Its totient is φ = 247156800.

The previous prime is 289073263. The next prime is 289073297. The reversal of 289073281 is 182370982.

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

It is a cyclic number.

It is not a de Polignac number, because 289073281 - 2⁵ = 289073249 is a prime.

It is a super-2 number, since 2×289073281² = 167126723576209922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (289073221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48685 + ... + 54298.

It is an arithmetic number, because the mean of its divisors is an integer number (41399568).

Almost surely, 2^289073281 is an apocalyptic number.

It is an amenable number.

289073281 is a deficient number, since it is larger than the sum of its proper divisors (42123263).

289073281 is a wasteful number, since it uses less digits than its factorization.

289073281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103391.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 289073281 is about 17002.1551869167. The cubic root of 289073281 is about 661.2047790755.

The spelling of 289073281 in words is "two hundred eighty-nine million, seventy-three thousand, two hundred eighty-one".