27340005 has 32 divisors (see below), whose sum is σ = 54540288. Its totient is φ = 11361600.

The previous prime is 27339973. The next prime is 27340007. The reversal of 27340005 is 50004372.

It is a happy number.

It is not a de Polignac number, because 27340005 - 2⁵ = 27339973 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27340007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10681 + ... + 12990.

It is an arithmetic number, because the mean of its divisors is an integer number (1704384).

Almost surely, 2^27340005 is an apocalyptic number.

It is an amenable number.

27340005 is a deficient number, since it is larger than the sum of its proper divisors (27200283).

27340005 is a wasteful number, since it uses less digits than its factorization.

27340005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23697.

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 27340005 is about 5228.7670630848. The cubic root of 27340005 is about 301.2540285154.

Adding to 27340005 its reverse (50004372), we get a palindrome (77344377).

The spelling of 27340005 in words is "twenty-seven million, three hundred forty thousand, five".