28803100 has 36 divisors (see below), whose sum is σ = 66183264. Its totient is φ = 10842880.

The previous prime is 28803097. The next prime is 28803109. The reversal of 28803100 is 130882.

It is a super-2 number, since 2×28803100² = 1659237139220000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28803109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6772 + ... + 10171.

It is an arithmetic number, because the mean of its divisors is an integer number (1838424).

Almost surely, 2^28803100 is an apocalyptic number.

28803100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28803100 is an abundant number, since it is smaller than the sum of its proper divisors (37380164).

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

28803100 is a wasteful number, since it uses less digits than its factorization.

28803100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16974 (or 16967 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 28803100 is about 5366.8519636748. The cubic root of 28803100 is about 306.5347705223.

Adding to 28803100 its reverse (130882), we get a palindrome (28933982).

The spelling of 28803100 in words is "twenty-eight million, eight hundred three thousand, one hundred".