28358618841 has 12 divisors (see below), whose sum is σ = 46814228032. Its totient is φ = 16204925016.

The previous prime is 28358618819. The next prime is 28358618879. The reversal of 28358618841 is 14881685382.

28358618841 is a `hidden beast` number, since 2 + 8 + 3 + 586 + 18 + 8 + 41 = 666.

It is not a de Polignac number, because 28358618841 - 2²² = 28354424537 is a prime.

It is a super-2 number, since 2×28358618841² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28358618801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 225068341 + ... + 225068466.

Almost surely, 2^28358618841 is an apocalyptic number.

28358618841 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

28358618841 is a deficient number, since it is larger than the sum of its proper divisors (18455609191).

28358618841 is a wasteful number, since it uses less digits than its factorization.

28358618841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450136820 (or 450136817 counting only the distinct ones).

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

The spelling of 28358618841 in words is "twenty-eight billion, three hundred fifty-eight million, six hundred eighteen thousand, eight hundred forty-one".