27902087 has 4 divisors (see below), whose sum is σ = 27966960. Its totient is φ = 27837216.

The previous prime is 27902029. The next prime is 27902093. The reversal of 27902087 is 78020972.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27902087 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 (27902587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31787 + ... + 32652.

It is an arithmetic number, because the mean of its divisors is an integer number (6991740).

Almost surely, 2^27902087 is an apocalyptic number.

27902087 is a deficient number, since it is larger than the sum of its proper divisors (64873).

27902087 is an equidigital number, since it uses as much as digits as its factorization.

27902087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64872.

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 27902087 is about 5282.2426108614. The cubic root of 27902087 is about 303.3045295947.

The spelling of 27902087 in words is "twenty-seven million, nine hundred two thousand, eighty-seven".