27840942 has 32 divisors (see below), whose sum is σ = 62048160. Its totient is φ = 9253440.

The previous prime is 27840929. The next prime is 27840973. The reversal of 27840942 is 24904872.

It is a junction number, because it is equal to n+sod(n) for n = 27840897 and 27840906.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28738 + ... + 29690.

It is an arithmetic number, because the mean of its divisors is an integer number (1939005).

Almost surely, 2^27840942 is an apocalyptic number.

27840942 is an abundant number, since it is smaller than the sum of its proper divisors (34207218).

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

27840942 is a wasteful number, since it uses less digits than its factorization.

27840942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1505 (or 1499 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 27840942 is about 5276.4516485987. The cubic root of 27840942 is about 303.0828123808.

It can be divided in two parts, 27840 and 942, that added together give a palindrome (28782).

The spelling of 27840942 in words is "twenty-seven million, eight hundred forty thousand, nine hundred forty-two".