27684157 has 12 divisors (see below), whose sum is σ = 29463840. Its totient is φ = 26002328.

The previous prime is 27684119. The next prime is 27684187. The reversal of 27684157 is 75148672.

It is a de Polignac number, because none of the positive numbers 2^k-27684157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27684187) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30768 + ... + 31654.

It is an arithmetic number, because the mean of its divisors is an integer number (2455320).

Almost surely, 2^27684157 is an apocalyptic number.

It is an amenable number.

27684157 is a deficient number, since it is larger than the sum of its proper divisors (1779683).

27684157 is an equidigital number, since it uses as much as digits as its factorization.

27684157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 992 (or 969 counting only the distinct ones).

The product of its digits is 94080, while the sum is 40.

The square root of 27684157 is about 5261.5736239266. The cubic root of 27684157 is about 302.5128086920.

The spelling of 27684157 in words is "twenty-seven million, six hundred eighty-four thousand, one hundred fifty-seven".