27138207 has 4 divisors (see below), whose sum is σ = 36184280. Its totient is φ = 18092136.

The previous prime is 27138197. The next prime is 27138217. The reversal of 27138207 is 70283172.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (27138197) and next prime (27138217).

It is not a de Polignac number, because 27138207 - 2⁴ = 27138191 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 (27138217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4523032 + ... + 4523037.

It is an arithmetic number, because the mean of its divisors is an integer number (9046070).

Almost surely, 2^27138207 is an apocalyptic number.

27138207 is a deficient number, since it is larger than the sum of its proper divisors (9046073).

27138207 is an equidigital number, since it uses as much as digits as its factorization.

27138207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9046072.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 27138207 is about 5209.4344222766. The cubic root of 27138207 is about 300.5110068569.

The spelling of 27138207 in words is "twenty-seven million, one hundred thirty-eight thousand, two hundred seven".