27712493 has 4 divisors (see below), whose sum is σ = 28917408. Its totient is φ = 26507580.

The previous prime is 27712471. The next prime is 27712523. The reversal of 27712493 is 39421772.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27712493 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27712463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 602423 + ... + 602468.

It is an arithmetic number, because the mean of its divisors is an integer number (7229352).

Almost surely, 2^27712493 is an apocalyptic number.

27712493 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

27712493 is a deficient number, since it is larger than the sum of its proper divisors (1204915).

27712493 is a wasteful number, since it uses less digits than its factorization.

27712493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1204914.

The product of its digits is 21168, while the sum is 35.

The square root of 27712493 is about 5264.2656657885. The cubic root of 27712493 is about 302.6159853933.

The spelling of 27712493 in words is "twenty-seven million, seven hundred twelve thousand, four hundred ninety-three".