27912993 has 8 divisors (see below), whose sum is σ = 38500800. Its totient is φ = 17966928.

The previous prime is 27912967. The next prime is 27913001. The reversal of 27912993 is 39921972.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 27912993 - 2⁹ = 27912481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27914993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160333 + ... + 160506.

It is an arithmetic number, because the mean of its divisors is an integer number (4812600).

Almost surely, 2^27912993 is an apocalyptic number.

It is an amenable number.

27912993 is a deficient number, since it is larger than the sum of its proper divisors (10587807).

27912993 is a wasteful number, since it uses less digits than its factorization.

27912993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320871.

The product of its digits is 61236, while the sum is 42.

The square root of 27912993 is about 5283.2748366898. The cubic root of 27912993 is about 303.3440416727.

The spelling of 27912993 in words is "twenty-seven million, nine hundred twelve thousand, nine hundred ninety-three".