27940971 has 8 divisors (see below), whose sum is σ = 37483840. Its totient is φ = 18512712.

The previous prime is 27940961. The next prime is 27940973. The reversal of 27940971 is 17904972.

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

It is not a de Polignac number, because 27940971 - 2⁶ = 27940907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27940973) 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, 28081 + ... + 29058.

It is an arithmetic number, because the mean of its divisors is an integer number (4685480).

Almost surely, 2^27940971 is an apocalyptic number.

27940971 is a deficient number, since it is larger than the sum of its proper divisors (9542869).

27940971 is a wasteful number, since it uses less digits than its factorization.

27940971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57305.

The product of its (nonzero) digits is 31752, while the sum is 39.

The square root of 27940971 is about 5285.9219631016. The cubic root of 27940971 is about 303.4453579976.

The spelling of 27940971 in words is "twenty-seven million, nine hundred forty thousand, nine hundred seventy-one".