27861648 has 40 divisors (see below), whose sum is σ = 75108288. Its totient is φ = 8883072.

The previous prime is 27861643. The next prime is 27861649. The reversal of 27861648 is 84616872.

It is not an unprimeable number, because it can be changed into a prime (27861643) 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, 11515 + ... + 13722.

Almost surely, 2^27861648 is an apocalyptic number.

It is an amenable number.

27861648 is an abundant number, since it is smaller than the sum of its proper divisors (47246640).

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

27861648 is a wasteful number, since it uses less digits than its factorization.

27861648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25271 (or 25265 counting only the distinct ones).

The product of its digits is 129024, while the sum is 42.

The square root of 27861648 is about 5278.4133979824. The cubic root of 27861648 is about 303.1579304997.

The spelling of 27861648 in words is "twenty-seven million, eight hundred sixty-one thousand, six hundred forty-eight".