28872763823 has 8 divisors (see below), whose sum is σ = 29181146400. Its totient is φ = 28564600320.

The previous prime is 28872763813. The next prime is 28872763889. The reversal of 28872763823 is 32836727882.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28872763823 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 (28872763813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217403 + ... + 324051.

It is an arithmetic number, because the mean of its divisors is an integer number (3647643300).

Almost surely, 2^28872763823 is an apocalyptic number.

28872763823 is a deficient number, since it is larger than the sum of its proper divisors (308382577).

28872763823 is a wasteful number, since it uses less digits than its factorization.

28872763823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109537.

The product of its digits is 10838016, while the sum is 56.

The spelling of 28872763823 in words is "twenty-eight billion, eight hundred seventy-two million, seven hundred sixty-three thousand, eight hundred twenty-three".