28618673187 has 32 divisors (see below), whose sum is σ = 41932903936. Its totient is φ = 17254944000.

The previous prime is 28618673173. The next prime is 28618673191. The reversal of 28618673187 is 78137681682.

It is not a de Polignac number, because 28618673187 - 2¹⁹ = 28618148899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28618673117) 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, 396612 + ... + 463182.

It is an arithmetic number, because the mean of its divisors is an integer number (1310403248).

Almost surely, 2^28618673187 is an apocalyptic number.

28618673187 is a deficient number, since it is larger than the sum of its proper divisors (13314230749).

28618673187 is a wasteful number, since it uses less digits than its factorization.

28618673187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66811.

The product of its digits is 5419008, while the sum is 57.

The spelling of 28618673187 in words is "twenty-eight billion, six hundred eighteen million, six hundred seventy-three thousand, one hundred eighty-seven".