28197873935 has 32 divisors (see below), whose sum is σ = 43047936000. Its totient is φ = 17577883680.

The previous prime is 28197873931. The next prime is 28197873961. The reversal of 28197873935 is 53937879182.

It is not a de Polignac number, because 28197873935 - 2² = 28197873931 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28197873931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 728495 + ... + 766224.

It is an arithmetic number, because the mean of its divisors is an integer number (1345248000).

Almost surely, 2^28197873935 is an apocalyptic number.

28197873935 is a deficient number, since it is larger than the sum of its proper divisors (14850062065).

28197873935 is a wasteful number, since it uses less digits than its factorization.

28197873935 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1494756 (or 1494742 counting only the distinct ones).

The product of its digits is 22861440, while the sum is 62.

The spelling of 28197873935 in words is "twenty-eight billion, one hundred ninety-seven million, eight hundred seventy-three thousand, nine hundred thirty-five".