27897243 has 8 divisors (see below), whose sum is σ = 40577856. Its totient is φ = 16907400.

The previous prime is 27897211. The next prime is 27897251. The reversal of 27897243 is 34279872.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 27897243 - 2⁵ = 27897211 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27897195 and 27897204.

It is not an unprimeable number, because it can be changed into a prime (27897203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 422653 + ... + 422718.

It is an arithmetic number, because the mean of its divisors is an integer number (5072232).

Almost surely, 2^27897243 is an apocalyptic number.

27897243 is a deficient number, since it is larger than the sum of its proper divisors (12680613).

27897243 is a wasteful number, since it uses less digits than its factorization.

27897243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 845385.

The product of its digits is 169344, while the sum is 42.

The square root of 27897243 is about 5281.7840735873. The cubic root of 27897243 is about 303.2869766404.

The spelling of 27897243 in words is "twenty-seven million, eight hundred ninety-seven thousand, two hundred forty-three".