27997118 has 8 divisors (see below), whose sum is σ = 43821648. Its totient is φ = 13389904.

The previous prime is 27997103. The next prime is 27997121. The reversal of 27997118 is 81179972.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 304271 + ... + 304362.

It is an arithmetic number, because the mean of its divisors is an integer number (5477706).

Almost surely, 2^27997118 is an apocalyptic number.

27997118 is a deficient number, since it is larger than the sum of its proper divisors (15824530).

27997118 is a wasteful number, since it uses less digits than its factorization.

27997118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608658.

The product of its digits is 63504, while the sum is 44.

The square root of 27997118 is about 5291.2302917186. The cubic root of 27997118 is about 303.6484784379.

The spelling of 27997118 in words is "twenty-seven million, nine hundred ninety-seven thousand, one hundred eighteen".