27994771 has 8 divisors (see below), whose sum is σ = 33678080. Its totient is φ = 22732488.

The previous prime is 27994741. The next prime is 27994789. The reversal of 27994771 is 17749972.

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 27994771 - 2²³ = 19606163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27994721) 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, 105111 + ... + 105376.

It is an arithmetic number, because the mean of its divisors is an integer number (4209760).

Almost surely, 2^27994771 is an apocalyptic number.

27994771 is a deficient number, since it is larger than the sum of its proper divisors (5683309).

27994771 is a wasteful number, since it uses less digits than its factorization.

27994771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210513.

The product of its digits is 222264, while the sum is 46.

The square root of 27994771 is about 5291.0085050017. The cubic root of 27994771 is about 303.6399932444.

The spelling of 27994771 in words is "twenty-seven million, nine hundred ninety-four thousand, seven hundred seventy-one".