27979794 has 48 divisors (see below), whose sum is σ = 64157184. Its totient is φ = 8798400.

The previous prime is 27979771. The next prime is 27979823. The reversal of 27979794 is 49797972.

It is a self number, because there is not a number n which added to its sum of digits gives 27979794.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22267 + ... + 23489.

It is an arithmetic number, because the mean of its divisors is an integer number (1336608).

Almost surely, 2^27979794 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27979794, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32078592).

27979794 is an abundant number, since it is smaller than the sum of its proper divisors (36177390).

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

27979794 is a wasteful number, since it uses less digits than its factorization.

27979794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1303 (or 1300 counting only the distinct ones).

The product of its digits is 2000376, while the sum is 54.

The square root of 27979794 is about 5289.5929900135. The cubic root of 27979794 is about 303.5858351851.

The spelling of 27979794 in words is "twenty-seven million, nine hundred seventy-nine thousand, seven hundred ninety-four".