289240228 has 6 divisors (see below), whose sum is σ = 506170406. Its totient is φ = 144620112.

The previous prime is 289240213. The next prime is 289240279. The reversal of 289240228 is 822042982.

It can be written as a sum of positive squares in only one way, i.e., 286557184 + 2683044 = 16928^2 + 1638^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36155025 + ... + 36155032.

Almost surely, 2^289240228 is an apocalyptic number.

It is an amenable number.

289240228 is a deficient number, since it is larger than the sum of its proper divisors (216930178).

289240228 is a wasteful number, since it uses less digits than its factorization.

289240228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72310061 (or 72310059 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 289240228 is about 17007.0640617362. The cubic root of 289240228 is about 661.3320419740.

The spelling of 289240228 in words is "two hundred eighty-nine million, two hundred forty thousand, two hundred twenty-eight".