27840398 has 4 divisors (see below), whose sum is σ = 41760600. Its totient is φ = 13920198.

The previous prime is 27840367. The next prime is 27840413. The reversal of 27840398 is 89304872.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6960098 + ... + 6960101.

It is an arithmetic number, because the mean of its divisors is an integer number (10440150).

Almost surely, 2^27840398 is an apocalyptic number.

27840398 is a deficient number, since it is larger than the sum of its proper divisors (13920202).

27840398 is a wasteful number, since it uses less digits than its factorization.

27840398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13920201.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 27840398 is about 5276.4000985520. The cubic root of 27840398 is about 303.0808383321.

The spelling of 27840398 in words is "twenty-seven million, eight hundred forty thousand, three hundred ninety-eight".