28274839100 has 18 divisors (see below), whose sum is σ = 61356401064. Its totient is φ = 11309935600.

The previous prime is 28274839051. The next prime is 28274839111. The reversal of 28274839100 is 193847282.

It is a super-2 number, since 2×28274839100² (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 5 ways as a sum of consecutive naturals, for example, 141374096 + ... + 141374295.

It is an arithmetic number, because the mean of its divisors is an integer number (3408688948).

Almost surely, 2^28274839100 is an apocalyptic number.

28274839100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28274839100 is an abundant number, since it is smaller than the sum of its proper divisors (33081561964).

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

28274839100 is a wasteful number, since it uses less digits than its factorization.

28274839100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282748405 (or 282748398 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 44.

The spelling of 28274839100 in words is "twenty-eight billion, two hundred seventy-four million, eight hundred thirty-nine thousand, one hundred".