27851049 has 24 divisors (see below), whose sum is σ = 44071560. Its totient is φ = 16869888.

The previous prime is 27851041. The next prime is 27851059. The reversal of 27851049 is 94015872.

It can be written as a sum of positive squares in 4 ways, for example, as 16257024 + 11594025 = 4032^2 + 3405^2 .

It is not a de Polignac number, because 27851049 - 2³ = 27851041 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27851041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1299 + ... + 7575.

It is an arithmetic number, because the mean of its divisors is an integer number (1836315).

Almost surely, 2^27851049 is an apocalyptic number.

27851049 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

27851049 is a deficient number, since it is larger than the sum of its proper divisors (16220511).

27851049 is a wasteful number, since it uses less digits than its factorization.

27851049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6329 (or 6326 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 27851049 is about 5277.4093076054. The cubic root of 27851049 is about 303.1194836421.

The spelling of 27851049 in words is "twenty-seven million, eight hundred fifty-one thousand, forty-nine".