28603809800 has 24 divisors (see below), whose sum is σ = 66503858250. Its totient is φ = 11441523840.

The previous prime is 28603809701. The next prime is 28603809811. The reversal of 28603809800 is 890830682.

It can be written as a sum of positive squares in 3 ways, for example, as 23689519396 + 4914290404 = 153914^2 + 70102^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 71509325 + ... + 71509724.

Almost surely, 2^28603809800 is an apocalyptic number.

28603809800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28603809800 is an abundant number, since it is smaller than the sum of its proper divisors (37900048450).

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

28603809800 is a wasteful number, since it uses less digits than its factorization.

28603809800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143019065 (or 143019056 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 44.

The spelling of 28603809800 in words is "twenty-eight billion, six hundred three million, eight hundred nine thousand, eight hundred".