27786942 has 32 divisors (see below), whose sum is σ = 65383200. Its totient is φ = 8717184.

The previous prime is 27786887. The next prime is 27786947. The reversal of 27786942 is 24968772.

It is a super-2 number, since 2×27786942² = 1544228291422728, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27786947) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 14217 + ... + 16052.

It is an arithmetic number, because the mean of its divisors is an integer number (2043225).

Almost surely, 2^27786942 is an apocalyptic number.

27786942 is an abundant number, since it is smaller than the sum of its proper divisors (37596258).

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

27786942 is a wasteful number, since it uses less digits than its factorization.

27786942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30297 (or 30291 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 27786942 is about 5271.3320897094. The cubic root of 27786942 is about 302.8867334706.

The spelling of 27786942 in words is "twenty-seven million, seven hundred eighty-six thousand, nine hundred forty-two".