27891936 has 36 divisors (see below), whose sum is σ = 79318512. Its totient is φ = 9297216.

The previous prime is 27891923. The next prime is 27891937. The reversal of 27891936 is 63919872.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 27891891 and 27891900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27891937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 48136 + ... + 48711.

It is an arithmetic number, because the mean of its divisors is an integer number (2203292).

Almost surely, 2^27891936 is an apocalyptic number.

It is an amenable number.

27891936 is an abundant number, since it is smaller than the sum of its proper divisors (51426576).

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

27891936 is a wasteful number, since it uses less digits than its factorization.

27891936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96863 (or 96852 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 27891936 is about 5281.2816626270. The cubic root of 27891936 is about 303.2677436041.

The spelling of 27891936 in words is "twenty-seven million, eight hundred ninety-one thousand, nine hundred thirty-six".