28285475142 has 32 divisors (see below), whose sum is σ = 61469291520. Its totient is φ = 8644116960.

The previous prime is 28285475027. The next prime is 28285475209. The reversal of 28285475142 is 24157458282.

It is a junction number, because it is equal to n+sod(n) for n = 28285475091 and 28285475100.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3998373 + ... + 4005440.

It is an arithmetic number, because the mean of its divisors is an integer number (1920915360).

Almost surely, 2^28285475142 is an apocalyptic number.

28285475142 is an abundant number, since it is smaller than the sum of its proper divisors (33183816378).

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

28285475142 is a wasteful number, since it uses less digits than its factorization.

28285475142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8003868.

The product of its digits is 1433600, while the sum is 48.

The spelling of 28285475142 in words is "twenty-eight billion, two hundred eighty-five million, four hundred seventy-five thousand, one hundred forty-two".