28389680830 has 32 divisors (see below), whose sum is σ = 58414124736. Its totient is φ = 9731522304.

The previous prime is 28389680777. The next prime is 28389680831. The reversal of 28389680830 is 3808698382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28389680831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 306082 + ... + 387898.

It is an arithmetic number, because the mean of its divisors is an integer number (1825441398).

Almost surely, 2^28389680830 is an apocalyptic number.

28389680830 is an abundant number, since it is smaller than the sum of its proper divisors (30024443906).

28389680830 is a wasteful number, since it uses less digits than its factorization.

28389680830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86788.

The product of its (nonzero) digits is 3981312, while the sum is 55.

The spelling of 28389680830 in words is "twenty-eight billion, three hundred eighty-nine million, six hundred eighty thousand, eight hundred thirty".