28385186841 has 48 divisors (see below), whose sum is σ = 47750983488. Its totient is φ = 16191077760.

The previous prime is 28385186831. The next prime is 28385186891. The reversal of 28385186841 is 14868158382.

28385186841 is a `hidden beast` number, since 2 + 8 + 385 + 186 + 84 + 1 = 666.

It is not a de Polignac number, because 28385186841 - 2⁹ = 28385186329 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28385186831) 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, 133950 + ... + 273336.

It is an arithmetic number, because the mean of its divisors is an integer number (994812156).

Almost surely, 2^28385186841 is an apocalyptic number.

It is an amenable number.

28385186841 is a deficient number, since it is larger than the sum of its proper divisors (19365796647).

28385186841 is a wasteful number, since it uses less digits than its factorization.

28385186841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139443 (or 139418 counting only the distinct ones).

The product of its digits is 2949120, while the sum is 54.

The spelling of 28385186841 in words is "twenty-eight billion, three hundred eighty-five million, one hundred eighty-six thousand, eight hundred forty-one".