27311998 has 16 divisors (see below), whose sum is σ = 47138400. Its totient is φ = 11625696.

The previous prime is 27311989. The next prime is 27312007. The reversal of 27311998 is 89911372.

It is an interprime number because it is at equal distance from previous prime (27311989) and next prime (27312007).

It is a self number, because there is not a number n which added to its sum of digits gives 27311998.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4461 + ... + 8632.

It is an arithmetic number, because the mean of its divisors is an integer number (2946150).

Almost surely, 2^27311998 is an apocalyptic number.

27311998 is a deficient number, since it is larger than the sum of its proper divisors (19826402).

27311998 is a wasteful number, since it uses less digits than its factorization.

27311998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13251.

The product of its digits is 27216, while the sum is 40.

The square root of 27311998 is about 5226.0882120378. The cubic root of 27311998 is about 301.1511255321.

The spelling of 27311998 in words is "twenty-seven million, three hundred eleven thousand, nine hundred ninety-eight".