27240931 has 4 divisors (see below), whose sum is σ = 27254200. Its totient is φ = 27227664.

The previous prime is 27240929. The next prime is 27240937. The reversal of 27240931 is 13904272.

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

It is a cyclic number.

It is not a de Polignac number, because 27240931 - 2¹ = 27240929 is a prime.

It is a super-2 number, since 2×27240931² = 1484136643493522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27240931.

It is not an unprimeable number, because it can be changed into a prime (27240937) 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, 2826 + ... + 7903.

It is an arithmetic number, because the mean of its divisors is an integer number (6813550).

Almost surely, 2^27240931 is an apocalyptic number.

27240931 is a deficient number, since it is larger than the sum of its proper divisors (13269).

27240931 is a wasteful number, since it uses less digits than its factorization.

27240931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13268.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 27240931 is about 5219.2845295117. The cubic root of 27240931 is about 300.8896958994.

The spelling of 27240931 in words is "twenty-seven million, two hundred forty thousand, nine hundred thirty-one".