28269898900 has 36 divisors (see below), whose sum is σ = 63461055420. Its totient is φ = 10918028800.

The previous prime is 28269898849. The next prime is 28269898957. The reversal of 28269898900 is 989896282.

It can be written as a sum of positive squares in 6 ways, for example, as 3834581776 + 24435317124 = 61924^2 + 156318^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4871221 + ... + 4877020.

It is an arithmetic number, because the mean of its divisors is an integer number (1762807095).

Almost surely, 2^28269898900 is an apocalyptic number.

28269898900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28269898900 is an abundant number, since it is smaller than the sum of its proper divisors (35191156520).

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

28269898900 is a wasteful number, since it uses less digits than its factorization.

28269898900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9748284 (or 9748277 counting only the distinct ones).

The product of its (nonzero) digits is 8957952, while the sum is 61.

The spelling of 28269898900 in words is "twenty-eight billion, two hundred sixty-nine million, eight hundred ninety-eight thousand, nine hundred".