27330640 has 40 divisors (see below), whose sum is σ = 64504800. Its totient is φ = 10766976.

The previous prime is 27330617. The next prime is 27330643. The reversal of 27330640 is 4603372.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27330643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2811 + ... + 7909.

It is an arithmetic number, because the mean of its divisors is an integer number (1612620).

Almost surely, 2^27330640 is an apocalyptic number.

27330640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27330640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32252400).

27330640 is an abundant number, since it is smaller than the sum of its proper divisors (37174160).

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

27330640 is a wasteful number, since it uses less digits than its factorization.

27330640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5179 (or 5173 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 25.

The square root of 27330640 is about 5227.8714597817. The cubic root of 27330640 is about 301.2196275687.

The spelling of 27330640 in words is "twenty-seven million, three hundred thirty thousand, six hundred forty".