28129274195 has 8 divisors (see below), whose sum is σ = 36823777200. Its totient is φ = 20457653920.

The previous prime is 28129274141. The next prime is 28129274221. The reversal of 28129274195 is 59147292182.

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

It is not a de Polignac number, because 28129274195 - 2³⁴ = 10949405011 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255720620 + ... + 255720729.

It is an arithmetic number, because the mean of its divisors is an integer number (4602972150).

Almost surely, 2^28129274195 is an apocalyptic number.

28129274195 is a deficient number, since it is larger than the sum of its proper divisors (8694503005).

28129274195 is a wasteful number, since it uses less digits than its factorization.

28129274195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511441365.

The product of its digits is 725760, while the sum is 50.

The spelling of 28129274195 in words is "twenty-eight billion, one hundred twenty-nine million, two hundred seventy-four thousand, one hundred ninety-five".