27128157 has 8 divisors (see below), whose sum is σ = 41338176. Its totient is φ = 15501792.

The previous prime is 27128117. The next prime is 27128161. The reversal of 27128157 is 75182172.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 27128157 - 2⁸ = 27127901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27128117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 645888 + ... + 645929.

It is an arithmetic number, because the mean of its divisors is an integer number (5167272).

Almost surely, 2^27128157 is an apocalyptic number.

It is an amenable number.

27128157 is a deficient number, since it is larger than the sum of its proper divisors (14210019).

27128157 is a wasteful number, since it uses less digits than its factorization.

27128157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1291827.

The product of its digits is 7840, while the sum is 33.

The square root of 27128157 is about 5208.4697368805. The cubic root of 27128157 is about 300.4739065367.

The spelling of 27128157 in words is "twenty-seven million, one hundred twenty-eight thousand, one hundred fifty-seven".