27902161 has 8 divisors (see below), whose sum is σ = 32567040. Its totient is φ = 23407008.

The previous prime is 27902129. The next prime is 27902183. The reversal of 27902161 is 16120972.

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 27902161 - 2⁵ = 27902129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27902111) 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 7 ways as a sum of consecutive naturals, for example, 42076 + ... + 42733.

It is an arithmetic number, because the mean of its divisors is an integer number (4070880).

Almost surely, 2^27902161 is an apocalyptic number.

It is an amenable number.

27902161 is a deficient number, since it is larger than the sum of its proper divisors (4664879).

27902161 is an equidigital number, since it uses as much as digits as its factorization.

27902161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84863.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 27902161 is about 5282.2496154574. The cubic root of 27902161 is about 303.3047977289.

The spelling of 27902161 in words is "twenty-seven million, nine hundred two thousand, one hundred sixty-one".