27964087 has 4 divisors (see below), whose sum is σ = 27984960. Its totient is φ = 27943216.

The previous prime is 27964073. The next prime is 27964103. The reversal of 27964087 is 78046972.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 27964087 - 2⁷ = 27963959 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 (27964487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8278 + ... + 11155.

It is an arithmetic number, because the mean of its divisors is an integer number (6996240).

Almost surely, 2^27964087 is an apocalyptic number.

27964087 is a deficient number, since it is larger than the sum of its proper divisors (20873).

27964087 is a wasteful number, since it uses less digits than its factorization.

27964087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20872.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 27964087 is about 5288.1080737822. The cubic root of 27964087 is about 303.5290166196.

The spelling of 27964087 in words is "twenty-seven million, nine hundred sixty-four thousand, eighty-seven".