27691452 has 18 divisors (see below), whose sum is σ = 69997928. Its totient is φ = 9230472.

The previous prime is 27691451. The next prime is 27691459. The reversal of 27691452 is 25419672.

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 769207 = 27691452 / (2 + 7 + 6 + 9 + 1 + 4 + 5 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27691451) 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 5 ways as a sum of consecutive naturals, for example, 384568 + ... + 384639.

Almost surely, 2^27691452 is an apocalyptic number.

It is an amenable number.

27691452 is an abundant number, since it is smaller than the sum of its proper divisors (42306476).

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

27691452 is a wasteful number, since it uses less digits than its factorization.

27691452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769217 (or 769212 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 27691452 is about 5262.2668119357. The cubic root of 27691452 is about 302.5393778849.

The spelling of 27691452 in words is "twenty-seven million, six hundred ninety-one thousand, four hundred fifty-two".