28142473786 has 16 divisors (see below), whose sum is σ = 49270715136. Its totient is φ = 11804441616.

The previous prime is 28142473729. The next prime is 28142473823. The reversal of 28142473786 is 68737424182.

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, 21384201 + ... + 21385516.

It is an arithmetic number, because the mean of its divisors is an integer number (3079419696).

Almost surely, 2^28142473786 is an apocalyptic number.

28142473786 is a deficient number, since it is larger than the sum of its proper divisors (21128241350).

28142473786 is a wasteful number, since it uses less digits than its factorization.

28142473786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42769773.

The product of its digits is 3612672, while the sum is 52.

The spelling of 28142473786 in words is "twenty-eight billion, one hundred forty-two million, four hundred seventy-three thousand, seven hundred eighty-six".