27243216 has 360 divisors, whose sum is σ = 108055584. Its totient is φ = 6531840.

The previous prime is 27243143. The next prime is 27243217. The reversal of 27243216 is 61234272.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

Its product of digits (4032) is a multiple of the sum of its prime divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 27243216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27243217) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2095626 + ... + 2095638.

Almost surely, 2^27243216 is an apocalyptic number.

27243216 is a gapful number since it is divisible by the number (26) 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 27243216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54027792).

27243216 is an abundant number, since it is smaller than the sum of its proper divisors (80812368).

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

27243216 is a wasteful number, since it uses less digits than its factorization.

27243216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61 (or 36 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 27243216 is about 5219.5034246564. The cubic root of 27243216 is about 300.8981086531.

Adding to 27243216 its reverse (61234272), we get a palindrome (88477488).

The spelling of 27243216 in words is "twenty-seven million, two hundred forty-three thousand, two hundred sixteen".