27999324 has 48 divisors (see below), whose sum is σ = 74941440. Its totient is φ = 9030960.

The previous prime is 27999319. The next prime is 27999329. The reversal of 27999324 is 42399972.

It is an interprime number because it is at equal distance from previous prime (27999319) and next prime (27999329).

It is a self number, because there is not a number n which added to its sum of digits gives 27999324.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27999329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 834 + ... + 7529.

It is an arithmetic number, because the mean of its divisors is an integer number (1561280).

Almost surely, 2^27999324 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 27999324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37470720).

27999324 is an abundant number, since it is smaller than the sum of its proper divisors (46942116).

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

27999324 is a wasteful number, since it uses less digits than its factorization.

27999324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8407 (or 8399 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The square root of 27999324 is about 5291.4387457477. The cubic root of 27999324 is about 303.6564534368.

The spelling of 27999324 in words is "twenty-seven million, nine hundred ninety-nine thousand, three hundred twenty-four".