28148371927 has 16 divisors (see below), whose sum is σ = 30504696768. Its totient is φ = 25819568640.

The previous prime is 28148371903. The next prime is 28148371963. The reversal of 28148371927 is 72917384182.

It is a cyclic number.

It is not a de Polignac number, because 28148371927 - 2⁷ = 28148371799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28148371987) 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, 3650358 + ... + 3658060.

It is an arithmetic number, because the mean of its divisors is an integer number (1906543548).

Almost surely, 2^28148371927 is an apocalyptic number.

28148371927 is a deficient number, since it is larger than the sum of its proper divisors (2356324841).

28148371927 is a wasteful number, since it uses less digits than its factorization.

28148371927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9450.

The product of its digits is 1354752, while the sum is 52.

The spelling of 28148371927 in words is "twenty-eight billion, one hundred forty-eight million, three hundred seventy-one thousand, nine hundred twenty-seven".