28287655178 has 8 divisors (see below), whose sum is σ = 43418261568. Its totient is φ = 13814901324.

The previous prime is 28287655159. The next prime is 28287655241. The reversal of 28287655178 is 87155678282.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164463026 + ... + 164463197.

It is an arithmetic number, because the mean of its divisors is an integer number (5427282696).

Almost surely, 2^28287655178 is an apocalyptic number.

28287655178 is a deficient number, since it is larger than the sum of its proper divisors (15130606390).

28287655178 is a wasteful number, since it uses less digits than its factorization.

28287655178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328926268.

The product of its digits is 15052800, while the sum is 59.

The spelling of 28287655178 in words is "twenty-eight billion, two hundred eighty-seven million, six hundred fifty-five thousand, one hundred seventy-eight".