27140720 has 40 divisors (see below), whose sum is σ = 63745920. Its totient is φ = 10745600.

The previous prime is 27140699. The next prime is 27140741. The reversal of 27140720 is 2704172.

It is an interprime number because it is at equal distance from previous prime (27140699) and next prime (27140741).

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

It is a congruent number.

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, 6401 + ... + 9759.

It is an arithmetic number, because the mean of its divisors is an integer number (1593648).

Almost surely, 2^27140720 is an apocalyptic number.

27140720 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 27140720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31872960).

27140720 is an abundant number, since it is smaller than the sum of its proper divisors (36605200).

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

27140720 is a wasteful number, since it uses less digits than its factorization.

27140720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3473 (or 3467 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 23.

The square root of 27140720 is about 5209.6756137019. The cubic root of 27140720 is about 300.5202823511.

Adding to 27140720 its reverse (2704172), we get a palindrome (29844892).

The spelling of 27140720 in words is "twenty-seven million, one hundred forty thousand, seven hundred twenty".