28454854438 has 8 divisors (see below), whose sum is σ = 43487607888. Its totient is φ = 13958985144.

The previous prime is 28454854391. The next prime is 28454854451. The reversal of 28454854438 is 83445845482.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134220906 + ... + 134221117.

It is an arithmetic number, because the mean of its divisors is an integer number (5435950986).

Almost surely, 2^28454854438 is an apocalyptic number.

28454854438 is a deficient number, since it is larger than the sum of its proper divisors (15032753450).

28454854438 is a wasteful number, since it uses less digits than its factorization.

28454854438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268442078.

The product of its digits is 19660800, while the sum is 55.

The spelling of 28454854438 in words is "twenty-eight billion, four hundred fifty-four million, eight hundred fifty-four thousand, four hundred thirty-eight".