27420291 has 12 divisors (see below), whose sum is σ = 39656968. Its totient is φ = 18257184.

The previous prime is 27420229. The next prime is 27420299. The reversal of 27420291 is 19202472.

It is not a de Polignac number, because 27420291 - 2¹⁰ = 27419267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27420299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8751 + ... + 11463.

Almost surely, 2^27420291 is an apocalyptic number.

27420291 is a deficient number, since it is larger than the sum of its proper divisors (12236677).

27420291 is a wasteful number, since it uses less digits than its factorization.

27420291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3842 (or 3839 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 27420291 is about 5236.4387707678. The cubic root of 27420291 is about 301.5486254420.

The spelling of 27420291 in words is "twenty-seven million, four hundred twenty thousand, two hundred ninety-one".