27198443 has 16 divisors (see below), whose sum is σ = 30201600. Its totient is φ = 24377760.

The previous prime is 27198407. The next prime is 27198499. The reversal of 27198443 is 34489172.

It is not a de Polignac number, because 27198443 - 2¹⁶ = 27132907 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27198397 and 27198406.

It is not an unprimeable number, because it can be changed into a prime (27198043) 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, 47348 + ... + 47918.

It is an arithmetic number, because the mean of its divisors is an integer number (1887600).

Almost surely, 2^27198443 is an apocalyptic number.

27198443 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

27198443 is a deficient number, since it is larger than the sum of its proper divisors (3003157).

27198443 is a wasteful number, since it uses less digits than its factorization.

27198443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722.

The product of its digits is 48384, while the sum is 38.

The square root of 27198443 is about 5215.2126514649. The cubic root of 27198443 is about 300.7331807676.

The spelling of 27198443 in words is "twenty-seven million, one hundred ninety-eight thousand, four hundred forty-three".