27897733 has 2 divisors, whose sum is σ = 27897734. Its totient is φ = 27897732.

The previous prime is 27897713. The next prime is 27897763. The reversal of 27897733 is 33779872.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26604964 + 1292769 = 5158^2 + 1137^2 .

It is a cyclic number.

It is not a de Polignac number, because 27897733 - 2¹³ = 27889541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27897713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13948866 + 13948867.

It is an arithmetic number, because the mean of its divisors is an integer number (13948867).

Almost surely, 2^27897733 is an apocalyptic number.

It is an amenable number.

27897733 is a deficient number, since it is larger than the sum of its proper divisors (1).

27897733 is an equidigital number, since it uses as much as digits as its factorization.

27897733 is an evil number, because the sum of its binary digits is even.

The product of its digits is 444528, while the sum is 46.

The square root of 27897733 is about 5281.8304592253. The cubic root of 27897733 is about 303.2887523206.

The spelling of 27897733 in words is "twenty-seven million, eight hundred ninety-seven thousand, seven hundred thirty-three".