27993958 has 8 divisors (see below), whose sum is σ = 42398928. Its totient is φ = 13860984.

The previous prime is 27993949. The next prime is 27993997. The reversal of 27993958 is 85939972.

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, 67741 + ... + 68152.

It is an arithmetic number, because the mean of its divisors is an integer number (5299866).

Almost surely, 2^27993958 is an apocalyptic number.

27993958 is a deficient number, since it is larger than the sum of its proper divisors (14404970).

27993958 is a wasteful number, since it uses less digits than its factorization.

27993958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135998.

The product of its digits is 1224720, while the sum is 52.

The square root of 27993958 is about 5290.9316759905. The cubic root of 27993958 is about 303.6370538657.

The spelling of 27993958 in words is "twenty-seven million, nine hundred ninety-three thousand, nine hundred fifty-eight".