28331075100 has 36 divisors (see below), whose sum is σ = 81971244824. Its totient is φ = 7554953280.

The previous prime is 28331075081. The next prime is 28331075131. The reversal of 28331075100 is 157013382.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47218159 + ... + 47218758.

Almost surely, 2^28331075100 is an apocalyptic number.

28331075100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28331075100 is an abundant number, since it is smaller than the sum of its proper divisors (53640169724).

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

28331075100 is a wasteful number, since it uses less digits than its factorization.

28331075100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94436934 (or 94436927 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

Adding to 28331075100 its reverse (157013382), we get a palindrome (28488088482).

The spelling of 28331075100 in words is "twenty-eight billion, three hundred thirty-one million, seventy-five thousand, one hundred".