28104433818 has 16 divisors (see below), whose sum is σ = 56219663520. Its totient is φ = 9366345296.

The previous prime is 28104433811. The next prime is 28104433831. The reversal of 28104433818 is 81833440182.

It is a self number, because there is not a number n which added to its sum of digits gives 28104433818.

It is not an unprimeable number, because it can be changed into a prime (28104433811) 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, 415788 + ... + 478631.

It is an arithmetic number, because the mean of its divisors is an integer number (3513728970).

Almost surely, 2^28104433818 is an apocalyptic number.

28104433818 is an abundant number, since it is smaller than the sum of its proper divisors (28115229702).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28104433818 is a wasteful number, since it uses less digits than its factorization.

28104433818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899661.

The product of its (nonzero) digits is 147456, while the sum is 42.

The spelling of 28104433818 in words is "twenty-eight billion, one hundred four million, four hundred thirty-three thousand, eight hundred eighteen".