27943145 has 8 divisors (see below), whose sum is σ = 34245504. Its totient is φ = 21878704.

The previous prime is 27943093. The next prime is 27943147. The reversal of 27943145 is 54134972.

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

It is a cyclic number.

It is not a de Polignac number, because 27943145 - 2¹² = 27939049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27943147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59219 + ... + 59688.

It is an arithmetic number, because the mean of its divisors is an integer number (4280688).

Almost surely, 2^27943145 is an apocalyptic number.

It is an amenable number.

27943145 is a deficient number, since it is larger than the sum of its proper divisors (6302359).

27943145 is a wasteful number, since it uses less digits than its factorization.

27943145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118959.

The product of its digits is 30240, while the sum is 35.

The square root of 27943145 is about 5286.1275996707. The cubic root of 27943145 is about 303.4532278398.

The spelling of 27943145 in words is "twenty-seven million, nine hundred forty-three thousand, one hundred forty-five".