288398906 has 8 divisors (see below), whose sum is σ = 432719904. Its totient is φ = 144158940.

The previous prime is 288398843. The next prime is 288398933. The reversal of 288398906 is 609893882.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10400 + ... + 26171.

It is an arithmetic number, because the mean of its divisors is an integer number (54089988).

Almost surely, 2^288398906 is an apocalyptic number.

288398906 is a deficient number, since it is larger than the sum of its proper divisors (144320998).

288398906 is a wasteful number, since it uses less digits than its factorization.

288398906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40516.

The product of its (nonzero) digits is 1492992, while the sum is 53.

The square root of 288398906 is about 16982.3115623286. The cubic root of 288398906 is about 660.6902069388.

The spelling of 288398906 in words is "two hundred eighty-eight million, three hundred ninety-eight thousand, nine hundred six".