28169183100 has 72 divisors (see below), whose sum is σ = 81560418688. Its totient is φ = 7506475200.

The previous prime is 28169183041. The next prime is 28169183111. The reversal of 28169183100 is 138196182.

It is a super-2 number, since 2×28169183100² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 401655 + ... + 466545.

Almost surely, 2^28169183100 is an apocalyptic number.

28169183100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28169183100 is an abundant number, since it is smaller than the sum of its proper divisors (53391235588).

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

28169183100 is a wasteful number, since it uses less digits than its factorization.

28169183100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66355 (or 66348 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 39.

The spelling of 28169183100 in words is "twenty-eight billion, one hundred sixty-nine million, one hundred eighty-three thousand, one hundred".