27993733 has 2 divisors, whose sum is σ = 27993734. Its totient is φ = 27993732.

The previous prime is 27993727. The next prime is 27993773. The reversal of 27993733 is 33739972.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22877089 + 5116644 = 4783^2 + 2262^2 .

It is a cyclic number.

It is not a de Polignac number, because 27993733 - 2⁵ = 27993701 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27993733.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27993703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13996866 + 13996867.

It is an arithmetic number, because the mean of its divisors is an integer number (13996867).

Almost surely, 2^27993733 is an apocalyptic number.

It is an amenable number.

27993733 is a deficient number, since it is larger than the sum of its proper divisors (1).

27993733 is an equidigital number, since it uses as much as digits as its factorization.

27993733 is an evil number, because the sum of its binary digits is even.

The product of its digits is 214326, while the sum is 43.

The square root of 27993733 is about 5290.9104131520. The cubic root of 27993733 is about 303.6362403744.

The spelling of 27993733 in words is "twenty-seven million, nine hundred ninety-three thousand, seven hundred thirty-three".