28765697103 has 80 divisors (see below), whose sum is σ = 52112535552. Its totient is φ = 15573384000.

The previous prime is 28765697089. The next prime is 28765697117. The reversal of 28765697103 is 30179656782.

28765697103 is a `hidden beast` number, since 2 + 8 + 7 + 6 + 569 + 71 + 0 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (28765697089) and next prime (28765697117).

It is not a de Polignac number, because 28765697103 - 2⁵ = 28765697071 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28765697103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28765697203) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 319018 + ... + 399128.

Almost surely, 2^28765697103 is an apocalyptic number.

28765697103 is a deficient number, since it is larger than the sum of its proper divisors (23346838449).

28765697103 is a wasteful number, since it uses less digits than its factorization.

28765697103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80178 (or 80169 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 54.

The spelling of 28765697103 in words is "twenty-eight billion, seven hundred sixty-five million, six hundred ninety-seven thousand, one hundred three".