27421065 has 32 divisors (see below), whose sum is σ = 55714560. Its totient is φ = 12534912.

The previous prime is 27421049. The next prime is 27421067. The reversal of 27421065 is 56012472.

It is not a de Polignac number, because 27421065 - 2⁴ = 27421049 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (27421067) 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 31 ways as a sum of consecutive naturals, for example, 13564 + ... + 15453.

It is an arithmetic number, because the mean of its divisors is an integer number (1741080).

Almost surely, 2^27421065 is an apocalyptic number.

It is an amenable number.

27421065 is an abundant number, since it is smaller than the sum of its proper divisors (28293495).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27421065 is a wasteful number, since it uses less digits than its factorization.

27421065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29038 (or 29032 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 27421065 is about 5236.5126754358. The cubic root of 27421065 is about 301.5514627136.

The spelling of 27421065 in words is "twenty-seven million, four hundred twenty-one thousand, sixty-five".