27421329 has 32 divisors (see below), whose sum is σ = 41810944. Its totient is φ = 15863040.

The previous prime is 27421309. The next prime is 27421343. The reversal of 27421329 is 92312472.

It is not a de Polignac number, because 27421329 - 2⁷ = 27421201 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27421296 and 27421305.

It is not an unprimeable number, because it can be changed into a prime (27421309) 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, 44427 + ... + 45039.

It is an arithmetic number, because the mean of its divisors is an integer number (1306592).

Almost surely, 2^27421329 is an apocalyptic number.

It is an amenable number.

27421329 is a deficient number, since it is larger than the sum of its proper divisors (14389615).

27421329 is a wasteful number, since it uses less digits than its factorization.

27421329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697.

The product of its digits is 6048, while the sum is 30.

The square root of 27421329 is about 5236.5378829910. The cubic root of 27421329 is about 301.5524304530.

The spelling of 27421329 in words is "twenty-seven million, four hundred twenty-one thousand, three hundred twenty-nine".