28489173854 has 4 divisors (see below), whose sum is σ = 42733760784. Its totient is φ = 14244586926.

The previous prime is 28489173809. The next prime is 28489173877. The reversal of 28489173854 is 45837198482.

28489173854 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28489173793 and 28489173802.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 7122293462 + ... + 7122293465.

It is an arithmetic number, because the mean of its divisors is an integer number (10683440196).

Almost surely, 2^28489173854 is an apocalyptic number.

28489173854 is a deficient number, since it is larger than the sum of its proper divisors (14244586930).

28489173854 is a wasteful number, since it uses less digits than its factorization.

28489173854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14244586929.

The product of its digits is 15482880, while the sum is 59.

The spelling of 28489173854 in words is "twenty-eight billion, four hundred eighty-nine million, one hundred seventy-three thousand, eight hundred fifty-four".