28338103247 has 4 divisors (see below), whose sum is σ = 28507792656. Its totient is φ = 28168413840.

The previous prime is 28338103243. The next prime is 28338103279. The reversal of 28338103247 is 74230183382.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74230183382 = 2 ⋅37115091691.

It is a cyclic number.

It is not a de Polignac number, because 28338103247 - 2² = 28338103243 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 (28338103243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84844454 + ... + 84844787.

It is an arithmetic number, because the mean of its divisors is an integer number (7126948164).

Almost surely, 2^28338103247 is an apocalyptic number.

28338103247 is a deficient number, since it is larger than the sum of its proper divisors (169689409).

28338103247 is a wasteful number, since it uses less digits than its factorization.

28338103247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169689408.

The product of its (nonzero) digits is 193536, while the sum is 41.

The spelling of 28338103247 in words is "twenty-eight billion, three hundred thirty-eight million, one hundred three thousand, two hundred forty-seven".