289596872 has 8 divisors (see below), whose sum is σ = 542994150. Its totient is φ = 144798432.

The previous prime is 289596863. The next prime is 289596893. The reversal of 289596872 is 278695982.

It can be written as a sum of positive squares in only one way, i.e., 263932516 + 25664356 = 16246^2 + 5066^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18099797 + ... + 18099812.

Almost surely, 2^289596872 is an apocalyptic number.

It is an amenable number.

289596872 is a deficient number, since it is larger than the sum of its proper divisors (253397278).

289596872 is a wasteful number, since it uses less digits than its factorization.

289596872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36199615 (or 36199611 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 56.

The square root of 289596872 is about 17017.5460040512. The cubic root of 289596872 is about 661.6037460304.

The spelling of 289596872 in words is "two hundred eighty-nine million, five hundred ninety-six thousand, eight hundred seventy-two".