27022643 has 4 divisors (see below), whose sum is σ = 27046488. Its totient is φ = 26998800.

The previous prime is 27022627. The next prime is 27022657. The reversal of 27022643 is 34622072.

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 27022643 - 2⁴ = 27022627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27022613) 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 3 ways as a sum of consecutive naturals, for example, 10133 + ... + 12518.

It is an arithmetic number, because the mean of its divisors is an integer number (6761622).

Almost surely, 2^27022643 is an apocalyptic number.

27022643 is a deficient number, since it is larger than the sum of its proper divisors (23845).

27022643 is a wasteful number, since it uses less digits than its factorization.

27022643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23844.

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 27022643 is about 5198.3307897824. The cubic root of 27022643 is about 300.0838395306.

The spelling of 27022643 in words is "twenty-seven million, twenty-two thousand, six hundred forty-three".