27133506 has 48 divisors (see below), whose sum is σ = 61034688. Its totient is φ = 8704800.

The previous prime is 27133499. The next prime is 27133517. The reversal of 27133506 is 60533172.

It is a happy number.

27133506 is a `hidden beast` number, since 27 + 133 + 506 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 27133506.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87091 + ... + 87401.

It is an arithmetic number, because the mean of its divisors is an integer number (1271556).

Almost surely, 2^27133506 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27133506, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30517344).

27133506 is an abundant number, since it is smaller than the sum of its proper divisors (33901182).

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

27133506 is a wasteful number, since it uses less digits than its factorization.

27133506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487 (or 484 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 27133506 is about 5208.9832021230. The cubic root of 27133506 is about 300.4936539072.

Adding to 27133506 its reverse (60533172), we get a palindrome (87666678).

The spelling of 27133506 in words is "twenty-seven million, one hundred thirty-three thousand, five hundred six".