27428317 has 8 divisors (see below), whose sum is σ = 31594496. Its totient is φ = 23324112.

The previous prime is 27428299. The next prime is 27428339. The reversal of 27428317 is 71382472.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-27428317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27428347) 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 7 ways as a sum of consecutive naturals, for example, 14538 + ... + 16315.

It is an arithmetic number, because the mean of its divisors is an integer number (3949312).

Almost surely, 2^27428317 is an apocalyptic number.

It is an amenable number.

27428317 is a deficient number, since it is larger than the sum of its proper divisors (4166179).

27428317 is a wasteful number, since it uses less digits than its factorization.

27428317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30987.

The product of its digits is 18816, while the sum is 34.

The square root of 27428317 is about 5237.2050752286. The cubic root of 27428317 is about 301.5780439624.

The spelling of 27428317 in words is "twenty-seven million, four hundred twenty-eight thousand, three hundred seventeen".