27380409 has 32 divisors (see below), whose sum is σ = 43524096. Its totient is φ = 14981760.

The previous prime is 27380363. The next prime is 27380411. The reversal of 27380409 is 90408372.

It is not a de Polignac number, because 27380409 - 2¹¹ = 27378361 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27380409.

It is not an unprimeable number, because it can be changed into a prime (27380429) 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 31 ways as a sum of consecutive naturals, for example, 89034 + ... + 89340.

It is an arithmetic number, because the mean of its divisors is an integer number (1360128).

Almost surely, 2^27380409 is an apocalyptic number.

It is an amenable number.

27380409 is a deficient number, since it is larger than the sum of its proper divisors (16143687).

27380409 is a wasteful number, since it uses less digits than its factorization.

27380409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 27380409 is about 5232.6292626174. The cubic root of 27380409 is about 301.4023566605.

The spelling of 27380409 in words is "twenty-seven million, three hundred eighty thousand, four hundred nine".