28650286503 has 12 divisors (see below), whose sum is σ = 41793488568. Its totient is φ = 18911079600.

The previous prime is 28650286493. The next prime is 28650286591. The reversal of 28650286503 is 30568205682.

28650286503 is a `hidden beast` number, since 2 + 8 + 65 + 0 + 2 + 86 + 503 = 666.

It is not a de Polignac number, because 28650286503 - 2¹² = 28650282407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28650286403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15758325 + ... + 15760142.

It is an arithmetic number, because the mean of its divisors is an integer number (3482790714).

Almost surely, 2^28650286503 is an apocalyptic number.

28650286503 is a deficient number, since it is larger than the sum of its proper divisors (13143202065).

28650286503 is a wasteful number, since it uses less digits than its factorization.

28650286503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31518574 (or 31518571 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The spelling of 28650286503 in words is "twenty-eight billion, six hundred fifty million, two hundred eighty-six thousand, five hundred three".