27657130 has 32 divisors (see below), whose sum is σ = 54148176. Its totient is φ = 10128384.

The previous prime is 27657121. The next prime is 27657137. The reversal of 27657130 is 3175672.

It can be written as a sum of positive squares in 8 ways, for example, as 21501769 + 6155361 = 4637^2 + 2481^2 .

It is a junction number, because it is equal to n+sod(n) for n = 27657092 and 27657101.

It is not an unprimeable number, because it can be changed into a prime (27657137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4092 + ... + 8488.

Almost surely, 2^27657130 is an apocalyptic number.

27657130 is a deficient number, since it is larger than the sum of its proper divisors (26491046).

27657130 is a wasteful number, since it uses less digits than its factorization.

27657130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4458.

The product of its (nonzero) digits is 8820, while the sum is 31.

The square root of 27657130 is about 5259.0046586783. The cubic root of 27657130 is about 302.4143326843.

The spelling of 27657130 in words is "twenty-seven million, six hundred fifty-seven thousand, one hundred thirty".