28083598731 has 12 divisors (see below), whose sum is σ = 40584261640. Its totient is φ = 18713600640.

The previous prime is 28083598729. The next prime is 28083598769. The reversal of 28083598731 is 13789538082.

28083598731 is a `hidden beast` number, since 280 + 8 + 359 + 8 + 7 + 3 + 1 = 666.

It is not a de Polignac number, because 28083598731 - 2¹ = 28083598729 is a prime.

It is a super-2 number, since 2×28083598731² (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 (28003598731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 712966 + ... + 751323.

Almost surely, 2^28083598731 is an apocalyptic number.

28083598731 is a deficient number, since it is larger than the sum of its proper divisors (12500662909).

28083598731 is a wasteful number, since it uses less digits than its factorization.

28083598731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1466426 (or 1466423 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The spelling of 28083598731 in words is "twenty-eight billion, eighty-three million, five hundred ninety-eight thousand, seven hundred thirty-one".