27221344 has 48 divisors (see below), whose sum is σ = 55904688. Its totient is φ = 13036032.

The previous prime is 27221339. The next prime is 27221353. The reversal of 27221344 is 44312272.

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 7 ways as a sum of consecutive naturals, for example, 98134 + ... + 98410.

It is an arithmetic number, because the mean of its divisors is an integer number (1164681).

Almost surely, 2^27221344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27221344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27952344).

27221344 is an abundant number, since it is smaller than the sum of its proper divisors (28683344).

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

27221344 is a wasteful number, since it uses less digits than its factorization.

27221344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407 (or 399 counting only the distinct ones).

The product of its digits is 2688, while the sum is 25.

The square root of 27221344 is about 5217.4077854812. The cubic root of 27221344 is about 300.8175625403.

The spelling of 27221344 in words is "twenty-seven million, two hundred twenty-one thousand, three hundred forty-four".