28943704188 has 192 divisors, whose sum is σ = 90428800000. Its totient is φ = 7820851968.

The previous prime is 28943704129. The next prime is 28943704199. The reversal of 28943704188 is 88140734982.

It is a happy number.

28943704188 is a `hidden beast` number, since 2 + 8 + 94 + 370 + 4 + 188 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10527438 + ... + 10530186.

Almost surely, 2^28943704188 is an apocalyptic number.

28943704188 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28943704188, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45214400000).

28943704188 is an abundant number, since it is smaller than the sum of its proper divisors (61485095812).

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

28943704188 is a wasteful number, since it uses less digits than its factorization.

28943704188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3521 (or 3513 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 54.

The spelling of 28943704188 in words is "twenty-eight billion, nine hundred forty-three million, seven hundred four thousand, one hundred eighty-eight".