28020131727 has 48 divisors (see below), whose sum is σ = 45956219904. Its totient is φ = 15116976000.

The previous prime is 28020131723. The next prime is 28020131807. The reversal of 28020131727 is 72713102082.

It is not a de Polignac number, because 28020131727 - 2² = 28020131723 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28020131723) 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, 111852 + ... + 261822.

It is an arithmetic number, because the mean of its divisors is an integer number (957421248).

Almost surely, 2^28020131727 is an apocalyptic number.

28020131727 is a deficient number, since it is larger than the sum of its proper divisors (17936088177).

28020131727 is a wasteful number, since it uses less digits than its factorization.

28020131727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150060 (or 150053 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 33.

The spelling of 28020131727 in words is "twenty-eight billion, twenty million, one hundred thirty-one thousand, seven hundred twenty-seven".