27997343 has 12 divisors (see below), whose sum is σ = 31495464. Its totient is φ = 24855600.

The previous prime is 27997337. The next prime is 27997349. The reversal of 27997343 is 34379972.

It is an interprime number because it is at equal distance from previous prime (27997337) and next prime (27997349).

It is not a de Polignac number, because 27997343 - 2⁴ = 27997327 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27997294 and 27997303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27997349) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2513 + ... + 7893.

It is an arithmetic number, because the mean of its divisors is an integer number (2624622).

Almost surely, 2^27997343 is an apocalyptic number.

27997343 is a deficient number, since it is larger than the sum of its proper divisors (3498121).

27997343 is a wasteful number, since it uses less digits than its factorization.

27997343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5446 (or 5435 counting only the distinct ones).

The product of its digits is 285768, while the sum is 44.

The square root of 27997343 is about 5291.2515532717. The cubic root of 27997343 is about 303.6492918636.

The spelling of 27997343 in words is "twenty-seven million, nine hundred ninety-seven thousand, three hundred forty-three".