27975641 has 4 divisors (see below), whose sum is σ = 27988752. Its totient is φ = 27962532.

The previous prime is 27975631. The next prime is 27975677. The reversal of 27975641 is 14657972.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27975641 - 2¹⁴ = 27959257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27975631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2531 + ... + 7896.

It is an arithmetic number, because the mean of its divisors is an integer number (6997188).

Almost surely, 2^27975641 is an apocalyptic number.

It is an amenable number.

27975641 is a deficient number, since it is larger than the sum of its proper divisors (13111).

27975641 is a wasteful number, since it uses less digits than its factorization.

27975641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13110.

The product of its digits is 105840, while the sum is 41.

The square root of 27975641 is about 5289.2004121606. The cubic root of 27975641 is about 303.5708141744.

The spelling of 27975641 in words is "twenty-seven million, nine hundred seventy-five thousand, six hundred forty-one".