27897894 has 12 divisors (see below), whose sum is σ = 60445476. Its totient is φ = 9299292.

The previous prime is 27897887. The next prime is 27897907. The reversal of 27897894 is 49879872.

It is a self number, because there is not a number n which added to its sum of digits gives 27897894.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 774924 + ... + 774959.

It is an arithmetic number, because the mean of its divisors is an integer number (5037123).

Almost surely, 2^27897894 is an apocalyptic number.

27897894 is an abundant number, since it is smaller than the sum of its proper divisors (32547582).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27897894 is a wasteful number, since it uses less digits than its factorization.

27897894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1549891 (or 1549888 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 54.

The square root of 27897894 is about 5281.8457001317. The cubic root of 27897894 is about 303.2893357539.

The spelling of 27897894 in words is "twenty-seven million, eight hundred ninety-seven thousand, eight hundred ninety-four".