28905000130 has 8 divisors (see below), whose sum is σ = 52029000252. Its totient is φ = 11562000048.

The previous prime is 28905000077. The next prime is 28905000139. The reversal of 28905000130 is 3100050982.

It can be written as a sum of positive squares in 2 ways, for example, as 24304498201 + 4600501929 = 155899^2 + 67827^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (28905000139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1445249997 + ... + 1445250016.

Almost surely, 2^28905000130 is an apocalyptic number.

28905000130 is a deficient number, since it is larger than the sum of its proper divisors (23124000122).

28905000130 is a wasteful number, since it uses less digits than its factorization.

28905000130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2890500020.

The product of its (nonzero) digits is 2160, while the sum is 28.

The spelling of 28905000130 in words is "twenty-eight billion, nine hundred five million, one hundred thirty", and thus it is an aban number.