28130508133 has 16 divisors (see below), whose sum is σ = 36127478016. Its totient is φ = 21289403520.

The previous prime is 28130508113. The next prime is 28130508181. The reversal of 28130508133 is 33180503182.

It is not a de Polignac number, because 28130508133 - 2¹³ = 28130499941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28130508113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6718048 + ... + 6722233.

It is an arithmetic number, because the mean of its divisors is an integer number (2257967376).

Almost surely, 2^28130508133 is an apocalyptic number.

28130508133 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

28130508133 is a deficient number, since it is larger than the sum of its proper divisors (7996969883).

28130508133 is a wasteful number, since it uses less digits than its factorization.

28130508133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13440324.

The product of its (nonzero) digits is 17280, while the sum is 34.

The spelling of 28130508133 in words is "twenty-eight billion, one hundred thirty million, five hundred eight thousand, one hundred thirty-three".