27427791 has 16 divisors (see below), whose sum is σ = 37122048. Its totient is φ = 18012000.

The previous prime is 27427789. The next prime is 27427793. The reversal of 27427791 is 19772472.

It is an interprime number because it is at equal distance from previous prime (27427789) and next prime (27427793).

It is not a de Polignac number, because 27427791 - 2¹ = 27427789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27427793) 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 15 ways as a sum of consecutive naturals, for example, 86365 + ... + 86681.

It is an arithmetic number, because the mean of its divisors is an integer number (2320128).

Almost surely, 2^27427791 is an apocalyptic number.

27427791 is a deficient number, since it is larger than the sum of its proper divisors (9694257).

27427791 is a wasteful number, since it uses less digits than its factorization.

27427791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662.

The product of its digits is 49392, while the sum is 39.

The square root of 27427791 is about 5237.1548573629. The cubic root of 27427791 is about 301.5761161364.

The spelling of 27427791 in words is "twenty-seven million, four hundred twenty-seven thousand, seven hundred ninety-one".