27342440 has 32 divisors (see below), whose sum is σ = 61685280. Its totient is φ = 10907712.

The previous prime is 27342433. The next prime is 27342461. The reversal of 27342440 is 4424372.

It is a Cunningham number, because it is equal to 5229²-1.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20267 + ... + 21573.

It is an arithmetic number, because the mean of its divisors is an integer number (1927665).

Almost surely, 2^27342440 is an apocalyptic number.

27342440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27342440 is an abundant number, since it is smaller than the sum of its proper divisors (34342840).

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

27342440 is a wasteful number, since it uses less digits than its factorization.

27342440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1841 (or 1837 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 26.

The square root of 27342440 is about 5228.9999043794. Note that the first 4 decimals coincide. The cubic root of 27342440 is about 301.2629718420.

The spelling of 27342440 in words is "twenty-seven million, three hundred forty-two thousand, four hundred forty".