27828737 has 2 divisors, whose sum is σ = 27828738. Its totient is φ = 27828736.

The previous prime is 27828733. The next prime is 27828743. The reversal of 27828737 is 73782872.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14753281 + 13075456 = 3841^2 + 3616^2 .

It is a cyclic number.

It is not a de Polignac number, because 27828737 - 2² = 27828733 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27828733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13914368 + 13914369.

It is an arithmetic number, because the mean of its divisors is an integer number (13914369).

Almost surely, 2^27828737 is an apocalyptic number.

It is an amenable number.

27828737 is a deficient number, since it is larger than the sum of its proper divisors (1).

27828737 is an equidigital number, since it uses as much as digits as its factorization.

27828737 is an evil number, because the sum of its binary digits is even.

The product of its digits is 263424, while the sum is 44.

The square root of 27828737 is about 5275.2949680563. The cubic root of 27828737 is about 303.0385171075.

The spelling of 27828737 in words is "twenty-seven million, eight hundred twenty-eight thousand, seven hundred thirty-seven".