27081243 has 16 divisors (see below), whose sum is σ = 45852160. Its totient is φ = 15474888.

The previous prime is 27081233. The next prime is 27081253. The reversal of 27081243 is 34218072.

It is an interprime number because it is at equal distance from previous prime (27081233) and next prime (27081253).

It is not a de Polignac number, because 27081243 - 2⁵ = 27081211 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27081203) 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, 71455 + ... + 71832.

It is an arithmetic number, because the mean of its divisors is an integer number (2865760).

Almost surely, 2^27081243 is an apocalyptic number.

27081243 is a deficient number, since it is larger than the sum of its proper divisors (18770917).

27081243 is a wasteful number, since it uses less digits than its factorization.

27081243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143303 (or 143297 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 27081243 is about 5203.9641620595. The cubic root of 27081243 is about 300.3005987008.

The spelling of 27081243 in words is "twenty-seven million, eighty-one thousand, two hundred forty-three".