27889898 has 4 divisors (see below), whose sum is σ = 41834850. Its totient is φ = 13944948.

The previous prime is 27889879. The next prime is 27889907. The reversal of 27889898 is 89898872.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 26759929 + 1129969 = 5173^2 + 1063^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6972473 + ... + 6972476.

Almost surely, 2^27889898 is an apocalyptic number.

27889898 is a deficient number, since it is larger than the sum of its proper divisors (13944952).

27889898 is a wasteful number, since it uses less digits than its factorization.

27889898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13944951.

The product of its digits is 4644864, while the sum is 59.

The square root of 27889898 is about 5281.0887135135. The cubic root of 27889898 is about 303.2603570640.

The spelling of 27889898 in words is "twenty-seven million, eight hundred eighty-nine thousand, eight hundred ninety-eight".