28601836218 has 48 divisors (see below), whose sum is σ = 67732644096. Its totient is φ = 8683666560.

The previous prime is 28601836171. The next prime is 28601836247. The reversal of 28601836218 is 81263810682.

28601836218 is a `hidden beast` number, since 2 + 8 + 6 + 0 + 18 + 3 + 621 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1498096 + ... + 1517067.

It is an arithmetic number, because the mean of its divisors is an integer number (1411096752).

Almost surely, 2^28601836218 is an apocalyptic number.

28601836218 is an abundant number, since it is smaller than the sum of its proper divisors (39130807878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28601836218 is a wasteful number, since it uses less digits than its factorization.

28601836218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3015219 (or 3015216 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The spelling of 28601836218 in words is "twenty-eight billion, six hundred one million, eight hundred thirty-six thousand, two hundred eighteen".