228731289686 has 32 divisors (see below), whose sum is σ = 360944812800. Its totient is φ = 108500925280.

The previous prime is 228731289673. The next prime is 228731289719. The reversal of 228731289686 is 686982137822.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3167321 + ... + 3238731.

It is an arithmetic number, because the mean of its divisors is an integer number (11279525400).

Almost surely, 2^228731289686 is an apocalyptic number.

228731289686 is a deficient number, since it is larger than the sum of its proper divisors (132213523114).

228731289686 is a wasteful number, since it uses less digits than its factorization.

228731289686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72004.

The product of its digits is 27869184, while the sum is 62.

The spelling of 228731289686 in words is "two hundred twenty-eight billion, seven hundred thirty-one million, two hundred eighty-nine thousand, six hundred eighty-six".