289540630 has 16 divisors (see below), whose sum is σ = 528313824. Its totient is φ = 114229440.

The previous prime is 289540619. The next prime is 289540631. The reversal of 289540630 is 36045982.

It is a self number, because there is not a number n which added to its sum of digits gives 289540630.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289540631) 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, 197586 + ... + 199045.

It is an arithmetic number, because the mean of its divisors is an integer number (33019614).

Almost surely, 2^289540630 is an apocalyptic number.

289540630 is a deficient number, since it is larger than the sum of its proper divisors (238773194).

289540630 is a wasteful number, since it uses less digits than its factorization.

289540630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396711.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 289540630 is about 17015.8934528869. The cubic root of 289540630 is about 661.5609136997.

The spelling of 289540630 in words is "two hundred eighty-nine million, five hundred forty thousand, six hundred thirty".