27939798 has 24 divisors (see below), whose sum is σ = 61680528. Its totient is φ = 9137232.

The previous prime is 27939797. The next prime is 27939869. The reversal of 27939798 is 89793972.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27939797) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13690 + ... + 15597.

It is an arithmetic number, because the mean of its divisors is an integer number (2570022).

Almost surely, 2^27939798 is an apocalyptic number.

27939798 is an abundant number, since it is smaller than the sum of its proper divisors (33740730).

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

27939798 is a wasteful number, since it uses less digits than its factorization.

27939798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29348 (or 29345 counting only the distinct ones).

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

The square root of 27939798 is about 5285.8110068371. The cubic root of 27939798 is about 303.4411115884.

The spelling of 27939798 in words is "twenty-seven million, nine hundred thirty-nine thousand, seven hundred ninety-eight".