27857241 has 12 divisors (see below), whose sum is σ = 40317732. Its totient is φ = 18534816.

The previous prime is 27857227. The next prime is 27857243. The reversal of 27857241 is 14275872.

It can be written as a sum of positive squares in 2 ways, for example, as 14745600 + 13111641 = 3840^2 + 3621^2 .

It is not a de Polignac number, because 27857241 - 2⁹ = 27856729 is a prime.

It is a super-2 number, since 2×27857241² = 1552051752264162, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27857196 and 27857205.

It is not an unprimeable number, because it can be changed into a prime (27857243) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 2235 + ... + 7791.

It is an arithmetic number, because the mean of its divisors is an integer number (3359811).

Almost surely, 2^27857241 is an apocalyptic number.

It is an amenable number.

27857241 is a deficient number, since it is larger than the sum of its proper divisors (12460491).

27857241 is a wasteful number, since it uses less digits than its factorization.

27857241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6120 (or 6117 counting only the distinct ones).

The product of its digits is 31360, while the sum is 36.

The square root of 27857241 is about 5277.9959264857. The cubic root of 27857241 is about 303.1419457137.

The spelling of 27857241 in words is "twenty-seven million, eight hundred fifty-seven thousand, two hundred forty-one".