27999244 has 72 divisors (see below), whose sum is σ = 62266848. Its totient is φ = 10782720.

The previous prime is 27999229. The next prime is 27999247. The reversal of 27999244 is 44299972.

It is a junction number, because it is equal to n+sod(n) for n = 27999194 and 27999203.

It is not an unprimeable number, because it can be changed into a prime (27999247) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 288604 + ... + 288700.

Almost surely, 2^27999244 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 27999244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31133424).

27999244 is an abundant number, since it is smaller than the sum of its proper divisors (34267604).

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

27999244 is a wasteful number, since it uses less digits than its factorization.

27999244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195 (or 180 counting only the distinct ones).

The product of its digits is 326592, while the sum is 46.

The square root of 27999244 is about 5291.4311863616. The cubic root of 27999244 is about 303.6561642329.

The spelling of 27999244 in words is "twenty-seven million, nine hundred ninety-nine thousand, two hundred forty-four".