27990441 has 24 divisors (see below), whose sum is σ = 42194880. Its totient is φ = 18541872.

The previous prime is 27990421. The next prime is 27990461. The reversal of 27990441 is 14409972.

It is an interprime number because it is at equal distance from previous prime (27990421) and next prime (27990461).

It is not a de Polignac number, because 27990441 - 2¹⁰ = 27989417 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 27990396 and 27990405.

It is not an unprimeable number, because it can be changed into a prime (27990421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55396 + ... + 55898.

It is an arithmetic number, because the mean of its divisors is an integer number (1758120).

Almost surely, 2^27990441 is an apocalyptic number.

It is an amenable number.

27990441 is a deficient number, since it is larger than the sum of its proper divisors (14204439).

27990441 is an equidigital number, since it uses as much as digits as its factorization.

27990441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747 (or 735 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 27990441 is about 5290.5993044267. The cubic root of 27990441 is about 303.6243375950.

The spelling of 27990441 in words is "twenty-seven million, nine hundred ninety thousand, four hundred forty-one".