27481320 has 96 divisors (see below), whose sum is σ = 93225600. Its totient is φ = 7007616.

The previous prime is 27481319. The next prime is 27481369. The reversal of 27481320 is 2318472.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6621 + ... + 9939.

It is an arithmetic number, because the mean of its divisors is an integer number (971100).

Almost surely, 2^27481320 is an apocalyptic number.

27481320 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 27481320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46612800).

27481320 is an abundant number, since it is smaller than the sum of its proper divisors (65744280).

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

27481320 is a wasteful number, since it uses less digits than its factorization.

27481320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3359 (or 3352 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 27481320 is about 5242.2628701735. The cubic root of 27481320 is about 301.7721773444.

Adding to 27481320 its reverse (2318472), we get a palindrome (29799792).

The spelling of 27481320 in words is "twenty-seven million, four hundred eighty-one thousand, three hundred twenty".