27999996 has 48 divisors (see below), whose sum is σ = 69202560. Its totient is φ = 8786880.

The previous prime is 27999943. The next prime is 28000019. The reversal of 27999996 is 69999972.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51486 + ... + 52026.

It is an arithmetic number, because the mean of its divisors is an integer number (1441720).

Almost surely, 2^27999996 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 27999996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34601280).

27999996 is an abundant number, since it is smaller than the sum of its proper divisors (41202564).

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

27999996 is a wasteful number, since it uses less digits than its factorization.

27999996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794 (or 792 counting only the distinct ones).

The product of its digits is 4960116, while the sum is 60.

The square root of 27999996 is about 5291.5022441647. The cubic root of 27999996 is about 303.6588827276.

The spelling of 27999996 in words is "twenty-seven million, nine hundred ninety-nine thousand, nine hundred ninety-six".