27089964 has 90 divisors (see below), whose sum is σ = 77954492. Its totient is φ = 8197200.

The previous prime is 27089963. The next prime is 27089977. The reversal of 27089964 is 46998072.

It is a happy number.

It is a super-2 number, since 2×27089964² = 1467732299042592, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27089963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 38859 + ... + 39549.

Almost surely, 2^27089964 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 27089964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38977246).

27089964 is an abundant number, since it is smaller than the sum of its proper divisors (50864528).

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

27089964 is a wasteful number, since it uses less digits than its factorization.

27089964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729 (or 707 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 27089964 is about 5204.8020135256. The cubic root of 27089964 is about 300.3328306094.

The spelling of 27089964 in words is "twenty-seven million, eighty-nine thousand, nine hundred sixty-four".