27128466 has 64 divisors (see below), whose sum is σ = 64252800. Its totient is φ = 8460288.

The previous prime is 27128443. The next prime is 27128473. The reversal of 27128466 is 66482172.

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 27128466.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 140466 + ... + 140658.

It is an arithmetic number, because the mean of its divisors is an integer number (1003950).

Almost surely, 2^27128466 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27128466, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32126400).

27128466 is an abundant number, since it is smaller than the sum of its proper divisors (37124334).

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

27128466 is a wasteful number, since it uses less digits than its factorization.

27128466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360 (or 354 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 27128466 is about 5208.4994000192. The cubic root of 27128466 is about 300.4750473696.

The spelling of 27128466 in words is "twenty-seven million, one hundred twenty-eight thousand, four hundred sixty-six".