27786930 has 96 divisors (see below), whose sum is σ = 74433600. Its totient is φ = 6612480.

The previous prime is 27786887. The next prime is 27786947. The reversal of 27786930 is 3968772.

It is a super-2 number, since 2×27786930² = 1544226957649800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 677710 + ... + 677750.

It is an arithmetic number, because the mean of its divisors is an integer number (775350).

Almost surely, 2^27786930 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27786930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37216800).

27786930 is an abundant number, since it is smaller than the sum of its proper divisors (46646670).

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

27786930 is a wasteful number, since it uses less digits than its factorization.

27786930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140 (or 99 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 27786930 is about 5271.3309514771. The cubic root of 27786930 is about 302.8866898693.

The spelling of 27786930 in words is "twenty-seven million, seven hundred eighty-six thousand, nine hundred thirty".