28050509100 has 36 divisors (see below), whose sum is σ = 81159473864. Its totient is φ = 7480135680.

The previous prime is 28050509089. The next prime is 28050509141. The reversal of 28050509100 is 190505082.

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

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, 46750549 + ... + 46751148.

Almost surely, 2^28050509100 is an apocalyptic number.

28050509100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28050509100 is an abundant number, since it is smaller than the sum of its proper divisors (53108964764).

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

28050509100 is a wasteful number, since it uses less digits than its factorization.

28050509100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93501714 (or 93501707 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 30.

The spelling of 28050509100 in words is "twenty-eight billion, fifty million, five hundred nine thousand, one hundred".