27397998 has 12 divisors (see below), whose sum is σ = 59362368. Its totient is φ = 9132660.

The previous prime is 27397987. The next prime is 27398023. The reversal of 27397998 is 89979372.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 761038 + ... + 761073.

It is an arithmetic number, because the mean of its divisors is an integer number (4946864).

Almost surely, 2^27397998 is an apocalyptic number.

27397998 is an abundant number, since it is smaller than the sum of its proper divisors (31964370).

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

27397998 is a wasteful number, since it uses less digits than its factorization.

27397998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1522119 (or 1522116 counting only the distinct ones).

The product of its digits is 1714608, while the sum is 54.

The square root of 27397998 is about 5234.3096966076. The cubic root of 27397998 is about 301.4668824956.

The spelling of 27397998 in words is "twenty-seven million, three hundred ninety-seven thousand, nine hundred ninety-eight".