27849913 has 16 divisors (see below), whose sum is σ = 34402816. Its totient is φ = 21954240.

The previous prime is 27849883. The next prime is 27849917. The reversal of 27849913 is 31994872.

It is not a de Polignac number, because 27849913 - 2⁵ = 27849881 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27849913.

It is not an unprimeable number, because it can be changed into a prime (27849917) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41803 + ... + 42463.

It is an arithmetic number, because the mean of its divisors is an integer number (2150176).

Almost surely, 2^27849913 is an apocalyptic number.

It is an amenable number.

27849913 is a deficient number, since it is larger than the sum of its proper divisors (6552903).

27849913 is a wasteful number, since it uses less digits than its factorization.

27849913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1144.

The product of its digits is 108864, while the sum is 43.

The square root of 27849913 is about 5277.3016779411. The cubic root of 27849913 is about 303.1153623322.

The spelling of 27849913 in words is "twenty-seven million, eight hundred forty-nine thousand, nine hundred thirteen".