28338752101 has 4 divisors (see below), whose sum is σ = 30915002304. Its totient is φ = 25762501900.

The previous prime is 28338752077. The next prime is 28338752119. The reversal of 28338752101 is 10125783382.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28338752101 - 2⁹ = 28338751589 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28338752201) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 1288125085 + ... + 1288125106.

It is an arithmetic number, because the mean of its divisors is an integer number (7728750576).

Almost surely, 2^28338752101 is an apocalyptic number.

It is an amenable number.

28338752101 is a deficient number, since it is larger than the sum of its proper divisors (2576250203).

28338752101 is a wasteful number, since it uses less digits than its factorization.

28338752101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2576250202.

The product of its (nonzero) digits is 80640, while the sum is 40.

The spelling of 28338752101 in words is "twenty-eight billion, three hundred thirty-eight million, seven hundred fifty-two thousand, one hundred one".