28243103047 has 4 divisors (see below), whose sum is σ = 28243473496. Its totient is φ = 28242732600.

The previous prime is 28243103039. The next prime is 28243103099. The reversal of 28243103047 is 74030134282.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 28243103047 - 2³ = 28243103039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28243103947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24204 + ... + 238897.

It is an arithmetic number, because the mean of its divisors is an integer number (7060868374).

Almost surely, 2^28243103047 is an apocalyptic number.

28243103047 is a deficient number, since it is larger than the sum of its proper divisors (370449).

28243103047 is a wasteful number, since it uses less digits than its factorization.

28243103047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370448.

The product of its (nonzero) digits is 32256, while the sum is 34.

The spelling of 28243103047 in words is "twenty-eight billion, two hundred forty-three million, one hundred three thousand, forty-seven".