27428827 has 2 divisors, whose sum is σ = 27428828. Its totient is φ = 27428826.

The previous prime is 27428813. The next prime is 27428861. The reversal of 27428827 is 72882472.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27428827 - 2⁷ = 27428699 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27428827.

It is not a weakly prime, because it can be changed into another prime (27428887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13714413 + 13714414.

It is an arithmetic number, because the mean of its divisors is an integer number (13714414).

Almost surely, 2^27428827 is an apocalyptic number.

27428827 is a deficient number, since it is larger than the sum of its proper divisors (1).

27428827 is an equidigital number, since it uses as much as digits as its factorization.

27428827 is an evil number, because the sum of its binary digits is even.

The product of its digits is 100352, while the sum is 40.

The square root of 27428827 is about 5237.2537650948. The cubic root of 27428827 is about 301.5799131237.

The spelling of 27428827 in words is "twenty-seven million, four hundred twenty-eight thousand, eight hundred twenty-seven".