27738157 has 6 divisors (see below), whose sum is σ = 29275278. Its totient is φ = 26277912.

The previous prime is 27738143. The next prime is 27738163. The reversal of 27738157 is 75183772.

It can be written as a sum of positive squares in only one way, i.e., 23290276 + 4447881 = 4826^2 + 2109^2 .

It is not a de Polignac number, because 27738157 - 2¹¹ = 27736109 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 (27738107) 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 5 ways as a sum of consecutive naturals, for example, 38058 + ... + 38779.

It is an arithmetic number, because the mean of its divisors is an integer number (4879213).

Almost surely, 2^27738157 is an apocalyptic number.

It is an amenable number.

27738157 is a deficient number, since it is larger than the sum of its proper divisors (1537121).

27738157 is an equidigital number, since it uses as much as digits as its factorization.

27738157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76875 (or 76856 counting only the distinct ones).

The product of its digits is 82320, while the sum is 40.

The square root of 27738157 is about 5266.7026686533. The cubic root of 27738157 is about 302.7093721613.

The spelling of 27738157 in words is "twenty-seven million, seven hundred thirty-eight thousand, one hundred fifty-seven".