28431779014 has 4 divisors (see below), whose sum is σ = 42647668524. Its totient is φ = 14215889506.

The previous prime is 28431778997. The next prime is 28431779021. The reversal of 28431779014 is 41097713482.

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

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, 7107944752 + ... + 7107944755.

It is an arithmetic number, because the mean of its divisors is an integer number (10661917131).

Almost surely, 2^28431779014 is an apocalyptic number.

28431779014 is a deficient number, since it is larger than the sum of its proper divisors (14215889510).

28431779014 is a wasteful number, since it uses less digits than its factorization.

28431779014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14215889509.

The product of its (nonzero) digits is 338688, while the sum is 46.

The spelling of 28431779014 in words is "twenty-eight billion, four hundred thirty-one million, seven hundred seventy-nine thousand, fourteen".