28111428592 has 20 divisors (see below), whose sum is σ = 58655577400. Its totient is φ = 12974505408.

The previous prime is 28111428581. The next prime is 28111428593. The reversal of 28111428592 is 29582411182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28111428593) 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, 67575342 + ... + 67575757.

It is an arithmetic number, because the mean of its divisors is an integer number (2932778870).

Almost surely, 2^28111428592 is an apocalyptic number.

It is an amenable number.

28111428592 is an abundant number, since it is smaller than the sum of its proper divisors (30544148808).

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

28111428592 is a wasteful number, since it uses less digits than its factorization.

28111428592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135151120 (or 135151114 counting only the distinct ones).

The product of its digits is 92160, while the sum is 43.

The spelling of 28111428592 in words is "twenty-eight billion, one hundred eleven million, four hundred twenty-eight thousand, five hundred ninety-two".