27840853 has 4 divisors (see below), whose sum is σ = 27871200. Its totient is φ = 27810508.

The previous prime is 27840811. The next prime is 27840863. The reversal of 27840853 is 35804872.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27840853 is a prime.

It is a super-2 number, since 2×27840853² = 1550226191535218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27840803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13753 + ... + 15646.

It is an arithmetic number, because the mean of its divisors is an integer number (6967800).

Almost surely, 2^27840853 is an apocalyptic number.

It is an amenable number.

27840853 is a deficient number, since it is larger than the sum of its proper divisors (30347).

27840853 is an equidigital number, since it uses as much as digits as its factorization.

27840853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30346.

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 27840853 is about 5276.4432148939. The cubic root of 27840853 is about 303.0824894224.

The spelling of 27840853 in words is "twenty-seven million, eight hundred forty thousand, eight hundred fifty-three".