28285442111 has 8 divisors (see below), whose sum is σ = 29074172400. Its totient is φ = 27506157952.

The previous prime is 28285442089. The next prime is 28285442123. The reversal of 28285442111 is 11124458282.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28285442111 - 2³⁴ = 11105572927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28285442131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2355461 + ... + 2367438.

It is an arithmetic number, because the mean of its divisors is an integer number (3634271550).

Almost surely, 2^28285442111 is an apocalyptic number.

28285442111 is a deficient number, since it is larger than the sum of its proper divisors (788730289).

28285442111 is a wasteful number, since it uses less digits than its factorization.

28285442111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4723065.

The product of its digits is 40960, while the sum is 38.

The spelling of 28285442111 in words is "twenty-eight billion, two hundred eighty-five million, four hundred forty-two thousand, one hundred eleven".