28964280188 has 24 divisors (see below), whose sum is σ = 50869087920. Its totient is φ = 14430349440.

The previous prime is 28964280187. The next prime is 28964280197. The reversal of 28964280188 is 88108246982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28964280187) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1278770 + ... + 1301222.

It is an arithmetic number, because the mean of its divisors is an integer number (2119545330).

Almost surely, 2^28964280188 is an apocalyptic number.

It is an amenable number.

28964280188 is a deficient number, since it is larger than the sum of its proper divisors (21904807732).

28964280188 is a wasteful number, since it uses less digits than its factorization.

28964280188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23597 (or 23595 counting only the distinct ones).

The product of its (nonzero) digits is 3538944, while the sum is 56.

The spelling of 28964280188 in words is "twenty-eight billion, nine hundred sixty-four million, two hundred eighty thousand, one hundred eighty-eight".