28804904100 has 504 divisors, whose sum is σ = 109475159808. Its totient is φ = 6438528000.

The previous prime is 28804904033. The next prime is 28804904101. The reversal of 28804904100 is 140940882.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (28804904101) by changing a digit.

It is a polite number, since it can be written in 167 ways as a sum of consecutive naturals, for example, 23983500 + ... + 23984700.

Almost surely, 2^28804904100 is an apocalyptic number.

28804904100 is a gapful number since it is divisible by the number (20) 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 28804904100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54737579904).

28804904100 is an abundant number, since it is smaller than the sum of its proper divisors (80670255708).

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

28804904100 is a wasteful number, since it uses less digits than its factorization.

28804904100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1287 (or 1265 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The spelling of 28804904100 in words is "twenty-eight billion, eight hundred four million, nine hundred four thousand, one hundred".