27864512 has 56 divisors (see below), whose sum is σ = 60295536. Its totient is φ = 12699648.

The previous prime is 27864481. The next prime is 27864521. The reversal of 27864512 is 21546872.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 88868 + ... + 89180.

It is an arithmetic number, because the mean of its divisors is an integer number (1076706).

Almost surely, 2^27864512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27864512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30147768).

27864512 is an abundant number, since it is smaller than the sum of its proper divisors (32431024).

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

27864512 is a wasteful number, since it uses less digits than its factorization.

27864512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445 (or 435 counting only the distinct ones).

The product of its digits is 26880, while the sum is 35.

The square root of 27864512 is about 5278.6846846539. The cubic root of 27864512 is about 303.1683177121.

The spelling of 27864512 in words is "twenty-seven million, eight hundred sixty-four thousand, five hundred twelve".