27343640 has 16 divisors (see below), whose sum is σ = 61523280. Its totient is φ = 10937440.

The previous prime is 27343637. The next prime is 27343649. The reversal of 27343640 is 4634372.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27343649) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 341756 + ... + 341835.

It is an arithmetic number, because the mean of its divisors is an integer number (3845205).

Almost surely, 2^27343640 is an apocalyptic number.

27343640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27343640 is an abundant number, since it is smaller than the sum of its proper divisors (34179640).

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

27343640 is a wasteful number, since it uses less digits than its factorization.

27343640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683602 (or 683598 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 29.

The square root of 27343640 is about 5229.1146478156. The cubic root of 27343640 is about 301.2673790356.

The spelling of 27343640 in words is "twenty-seven million, three hundred forty-three thousand, six hundred forty".