27920833 has 2 divisors, whose sum is σ = 27920834. Its totient is φ = 27920832.

The previous prime is 27920819. The next prime is 27920857. The reversal of 27920833 is 33802972.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23155344 + 4765489 = 4812^2 + 2183^2 .

It is a cyclic number.

It is not a de Polignac number, because 27920833 - 2¹³ = 27912641 is a prime.

It is not a weakly prime, because it can be changed into another prime (27924833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13960416 + 13960417.

It is an arithmetic number, because the mean of its divisors is an integer number (13960417).

Almost surely, 2^27920833 is an apocalyptic number.

It is an amenable number.

27920833 is a deficient number, since it is larger than the sum of its proper divisors (1).

27920833 is an equidigital number, since it uses as much as digits as its factorization.

27920833 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 27920833 is about 5284.0167486487. The cubic root of 27920833 is about 303.3724393758.

It can be divided in two parts, 279 and 20833, that added together give a palindrome (21112).

The spelling of 27920833 in words is "twenty-seven million, nine hundred twenty thousand, eight hundred thirty-three".