27839339920 has 160 divisors (see below), whose sum is σ = 75088622592. Its totient is φ = 9402064896.

The previous prime is 27839339837. The next prime is 27839339951. The reversal of 27839339920 is 2993393872.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10946169 + ... + 10948711.

Almost surely, 2^27839339920 is an apocalyptic number.

27839339920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27839339920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37544311296).

27839339920 is an abundant number, since it is smaller than the sum of its proper divisors (47249282672).

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

27839339920 is a wasteful number, since it uses less digits than its factorization.

27839339920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2849 (or 2843 counting only the distinct ones).

The product of its (nonzero) digits is 4408992, while the sum is 55.

The spelling of 27839339920 in words is "twenty-seven billion, eight hundred thirty-nine million, three hundred thirty-nine thousand, nine hundred twenty".