27216380 has 12 divisors (see below), whose sum is σ = 57154440. Its totient is φ = 10886544.

The previous prime is 27216373. The next prime is 27216403. The reversal of 27216380 is 8361272.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 680390 + ... + 680429.

It is an arithmetic number, because the mean of its divisors is an integer number (4762870).

Almost surely, 2^27216380 is an apocalyptic number.

27216380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27216380 is an abundant number, since it is smaller than the sum of its proper divisors (29938060).

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

27216380 is a wasteful number, since it uses less digits than its factorization.

27216380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360828 (or 1360826 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 27216380 is about 5216.9320486278. The cubic root of 27216380 is about 300.7992760423.

The spelling of 27216380 in words is "twenty-seven million, two hundred sixteen thousand, three hundred eighty".