27976391 has 8 divisors (see below), whose sum is σ = 28870800. Its totient is φ = 27092160.

The previous prime is 27976381. The next prime is 27976393. The reversal of 27976391 is 19367972.

It is a happy number.

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 27976391 - 2¹⁴ = 27960007 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 (27976393) 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, 3245 + ... + 8153.

It is an arithmetic number, because the mean of its divisors is an integer number (3608850).

Almost surely, 2^27976391 is an apocalyptic number.

27976391 is a deficient number, since it is larger than the sum of its proper divisors (894409).

27976391 is a wasteful number, since it uses less digits than its factorization.

27976391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5089.

The product of its digits is 142884, while the sum is 44.

The square root of 27976391 is about 5289.2713108707. The cubic root of 27976391 is about 303.5735269639.

The spelling of 27976391 in words is "twenty-seven million, nine hundred seventy-six thousand, three hundred ninety-one".