28618130188 has 24 divisors (see below), whose sum is σ = 50486369472. Its totient is φ = 14193763584.

The previous prime is 28618130143. The next prime is 28618130197. The reversal of 28618130188 is 88103181682.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 333981 + ... + 410827.

It is an arithmetic number, because the mean of its divisors is an integer number (2103598728).

Almost surely, 2^28618130188 is an apocalyptic number.

It is an amenable number.

28618130188 is a deficient number, since it is larger than the sum of its proper divisors (21868239284).

28618130188 is a wasteful number, since it uses less digits than its factorization.

28618130188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77601 (or 77599 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 46.

The spelling of 28618130188 in words is "twenty-eight billion, six hundred eighteen million, one hundred thirty thousand, one hundred eighty-eight".