27393998 has 4 divisors (see below), whose sum is σ = 41091000. Its totient is φ = 13696998.

The previous prime is 27393979. The next prime is 27394007. The reversal of 27393998 is 89939372.

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

It is a super-2 number, since 2×27393998² = 1500862252848008, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6848498 + ... + 6848501.

It is an arithmetic number, because the mean of its divisors is an integer number (10272750).

Almost surely, 2^27393998 is an apocalyptic number.

27393998 is a deficient number, since it is larger than the sum of its proper divisors (13697002).

27393998 is a wasteful number, since it uses less digits than its factorization.

27393998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13697001.

The product of its digits is 734832, while the sum is 50.

The square root of 27393998 is about 5233.9275883413. The cubic root of 27393998 is about 301.4522107883.

The spelling of 27393998 in words is "twenty-seven million, three hundred ninety-three thousand, nine hundred ninety-eight".