27690157 has 16 divisors (see below), whose sum is σ = 31783680. Its totient is φ = 23889600.

The previous prime is 27690149. The next prime is 27690167. The reversal of 27690157 is 75109672.

It is a cyclic number.

It is not a de Polignac number, because 27690157 - 2³ = 27690149 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 (27690107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18748 + ... + 20170.

It is an arithmetic number, because the mean of its divisors is an integer number (1986480).

Almost surely, 2^27690157 is an apocalyptic number.

It is an amenable number.

27690157 is a deficient number, since it is larger than the sum of its proper divisors (4093523).

27690157 is a wasteful number, since it uses less digits than its factorization.

27690157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1524.

The product of its (nonzero) digits is 26460, while the sum is 37.

The square root of 27690157 is about 5262.1437646647. The cubic root of 27690157 is about 302.5346616931.

The spelling of 27690157 in words is "twenty-seven million, six hundred ninety thousand, one hundred fifty-seven".