289932768 has 36 divisors (see below), whose sum is σ = 824497128. Its totient is φ = 96644160.

The previous prime is 289932767. The next prime is 289932793. The reversal of 289932768 is 867239982.

It is a happy number.

289932768 is a `hidden beast` number, since 289 + 93 + 276 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×289932768² = 168122019920283648, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289932767) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 503068 + ... + 503643.

It is an arithmetic number, because the mean of its divisors is an integer number (22902698).

Almost surely, 2^289932768 is an apocalyptic number.

It is an amenable number.

289932768 is an abundant number, since it is smaller than the sum of its proper divisors (534564360).

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

289932768 is a wasteful number, since it uses less digits than its factorization.

289932768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006727 (or 1006716 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The square root of 289932768 is about 17027.4122520129. The cubic root of 289932768 is about 661.8594396158.

The spelling of 289932768 in words is "two hundred eighty-nine million, nine hundred thirty-two thousand, seven hundred sixty-eight".