28499370218 has 8 divisors (see below), whose sum is σ = 46635333120. Its totient is φ = 12954259180.

The previous prime is 28499370167. The next prime is 28499370241. The reversal of 28499370218 is 81207399482.

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

It is a self number, because there is not a number n which added to its sum of digits gives 28499370218.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 647712938 + ... + 647712981.

It is an arithmetic number, because the mean of its divisors is an integer number (5829416640).

Almost surely, 2^28499370218 is an apocalyptic number.

28499370218 is a deficient number, since it is larger than the sum of its proper divisors (18135962902).

28499370218 is a wasteful number, since it uses less digits than its factorization.

28499370218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1295425932.

The product of its (nonzero) digits is 1741824, while the sum is 53.

The spelling of 28499370218 in words is "twenty-eight billion, four hundred ninety-nine million, three hundred seventy thousand, two hundred eighteen".