27240137 has 4 divisors (see below), whose sum is σ = 28842516. Its totient is φ = 25637760.

The previous prime is 27240133. The next prime is 27240139. The reversal of 27240137 is 73104272.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9759376 + 17480761 = 3124^2 + 4181^2 .

It is a cyclic number.

It is not a de Polignac number, because 27240137 - 2² = 27240133 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27240131) 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, 801164 + ... + 801197.

It is an arithmetic number, because the mean of its divisors is an integer number (7210629).

Almost surely, 2^27240137 is an apocalyptic number.

It is an amenable number.

27240137 is a deficient number, since it is larger than the sum of its proper divisors (1602379).

27240137 is a wasteful number, since it uses less digits than its factorization.

27240137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1602378.

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 27240137 is about 5219.2084648920. The cubic root of 27240137 is about 300.8867724954.

The spelling of 27240137 in words is "twenty-seven million, two hundred forty thousand, one hundred thirty-seven".