28509071130 has 96 divisors (see below), whose sum is σ = 74561160960. Its totient is φ = 7557672960.

The previous prime is 28509071083. The next prime is 28509071137. The reversal of 28509071130 is 3117090582.

It is not an unprimeable number, because it can be changed into a prime (28509071137) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15171531 + ... + 15173409.

It is an arithmetic number, because the mean of its divisors is an integer number (776678760).

Almost surely, 2^28509071130 is an apocalyptic number.

28509071130 is an abundant number, since it is smaller than the sum of its proper divisors (46052089830).

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

28509071130 is a wasteful number, since it uses less digits than its factorization.

28509071130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2796 (or 2793 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The spelling of 28509071130 in words is "twenty-eight billion, five hundred nine million, seventy-one thousand, one hundred thirty".