27913869 has 16 divisors (see below), whose sum is σ = 43531200. Its totient is φ = 17629488.

The previous prime is 27913859. The next prime is 27913877. The reversal of 27913869 is 96831972.

It is not a de Polignac number, because 27913869 - 2⁹ = 27913357 is a prime.

It is a super-2 number, since 2×27913869² = 1558368165098322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27913829) 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, 26694 + ... + 27719.

It is an arithmetic number, because the mean of its divisors is an integer number (2720700).

Almost surely, 2^27913869 is an apocalyptic number.

It is an amenable number.

27913869 is a deficient number, since it is larger than the sum of its proper divisors (15617331).

27913869 is a wasteful number, since it uses less digits than its factorization.

27913869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54441 (or 54435 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 27913869 is about 5283.3577391655. The cubic root of 27913869 is about 303.3472149452.

It can be divided in two parts, 27913 and 869, that added together give a palindrome (28782).

The spelling of 27913869 in words is "twenty-seven million, nine hundred thirteen thousand, eight hundred sixty-nine".