27973869 has 48 divisors (see below), whose sum is σ = 47752320. Its totient is φ = 14256000.

The previous prime is 27973837. The next prime is 27973879. The reversal of 27973869 is 96837972.

It is not a de Polignac number, because 27973869 - 2⁵ = 27973837 is a prime.

It is a super-2 number, since 2×27973869² = 1565074693658322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27973879) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 256587 + ... + 256695.

It is an arithmetic number, because the mean of its divisors is an integer number (994840).

Almost surely, 2^27973869 is an apocalyptic number.

It is an amenable number.

27973869 is a deficient number, since it is larger than the sum of its proper divisors (19778451).

27973869 is a wasteful number, since it uses less digits than its factorization.

27973869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242 (or 231 counting only the distinct ones).

The product of its digits is 1143072, while the sum is 51.

The square root of 27973869 is about 5289.0328983662. The cubic root of 27973869 is about 303.5644045645.

It can be divided in two parts, 2797 and 3869, that added together give a palindrome (6666).

The spelling of 27973869 in words is "twenty-seven million, nine hundred seventy-three thousand, eight hundred sixty-nine".