27283945 has 8 divisors (see below), whose sum is σ = 35259336. Its totient is φ = 20148096.

The previous prime is 27283939. The next prime is 27283987. The reversal of 27283945 is 54938272.

It can be written as a sum of positive squares in 4 ways, for example, as 534361 + 26749584 = 731^2 + 5172^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27283945 - 2⁵ = 27283913 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27283898 and 27283907.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209812 + ... + 209941.

It is an arithmetic number, because the mean of its divisors is an integer number (4407417).

Almost surely, 2^27283945 is an apocalyptic number.

It is an amenable number.

27283945 is a deficient number, since it is larger than the sum of its proper divisors (7975391).

27283945 is a wasteful number, since it uses less digits than its factorization.

27283945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419771.

The product of its digits is 120960, while the sum is 40.

The square root of 27283945 is about 5223.4035838713. The cubic root of 27283945 is about 301.0479829908.

The spelling of 27283945 in words is "twenty-seven million, two hundred eighty-three thousand, nine hundred forty-five".