27838862780 has 24 divisors (see below), whose sum is σ = 58469545680. Its totient is φ = 11134033920.

The previous prime is 27838862749. The next prime is 27838862813. The reversal of 27838862780 is 8726883872.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63011 + ... + 244229.

It is an arithmetic number, because the mean of its divisors is an integer number (2436231070).

Almost surely, 2^27838862780 is an apocalyptic number.

27838862780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27838862780 is an abundant number, since it is smaller than the sum of its proper divisors (30630682900).

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

27838862780 is a wasteful number, since it uses less digits than its factorization.

27838862780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188909 (or 188907 counting only the distinct ones).

The product of its (nonzero) digits is 14450688, while the sum is 59.

The spelling of 27838862780 in words is "twenty-seven billion, eight hundred thirty-eight million, eight hundred sixty-two thousand, seven hundred eighty".