27661236 has 12 divisors (see below), whose sum is σ = 64542912. Its totient is φ = 9220408.

The previous prime is 27661229. The next prime is 27661247. The reversal of 27661236 is 63216672.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 27661197 and 27661206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1152540 + ... + 1152563.

It is an arithmetic number, because the mean of its divisors is an integer number (5378576).

Almost surely, 2^27661236 is an apocalyptic number.

It is an amenable number.

27661236 is an abundant number, since it is smaller than the sum of its proper divisors (36881676).

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

27661236 is a wasteful number, since it uses less digits than its factorization.

27661236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2305110 (or 2305108 counting only the distinct ones).

The product of its digits is 18144, while the sum is 33.

The square root of 27661236 is about 5259.3950222435. The cubic root of 27661236 is about 302.4292975030.

The spelling of 27661236 in words is "twenty-seven million, six hundred sixty-one thousand, two hundred thirty-six".