28718767107 has 16 divisors (see below), whose sum is σ = 42737121280. Its totient is φ = 19059984936.

The previous prime is 28718767093. The next prime is 28718767117. The reversal of 28718767107 is 70176781782.

It is not a de Polignac number, because 28718767107 - 2¹² = 28718763011 is a prime.

It is a super-2 number, since 2×28718767107² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28718767117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2378863 + ... + 2390904.

It is an arithmetic number, because the mean of its divisors is an integer number (2671070080).

Almost surely, 2^28718767107 is an apocalyptic number.

28718767107 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

28718767107 is a deficient number, since it is larger than the sum of its proper divisors (14018354173).

28718767107 is a wasteful number, since it uses less digits than its factorization.

28718767107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4769999 (or 4769993 counting only the distinct ones).

The product of its (nonzero) digits is 1843968, while the sum is 54.

The spelling of 28718767107 in words is "twenty-eight billion, seven hundred eighteen million, seven hundred sixty-seven thousand, one hundred seven".