28107876031 has 4 divisors (see below), whose sum is σ = 28224506464. Its totient is φ = 27991245600.

The previous prime is 28107876029. The next prime is 28107876053. The reversal of 28107876031 is 13067870182.

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

It is a cyclic number.

It is not a de Polignac number, because 28107876031 - 2¹ = 28107876029 is a prime.

It is a super-2 number, since 2×28107876031² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28107876431) 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, 58314855 + ... + 58315336.

It is an arithmetic number, because the mean of its divisors is an integer number (7056126616).

Almost surely, 2^28107876031 is an apocalyptic number.

28107876031 is a deficient number, since it is larger than the sum of its proper divisors (116630433).

28107876031 is a wasteful number, since it uses less digits than its factorization.

28107876031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116630432.

The product of its (nonzero) digits is 112896, while the sum is 43.

The spelling of 28107876031 in words is "twenty-eight billion, one hundred seven million, eight hundred seventy-six thousand, thirty-one".