27993792 has 56 divisors (see below), whose sum is σ = 74525632. Its totient is φ = 9273600.

The previous prime is 27993773. The next prime is 27993839. The reversal of 27993792 is 29739972.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40167 + ... + 40857.

Almost surely, 2^27993792 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 27993792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37262816).

27993792 is an abundant number, since it is smaller than the sum of its proper divisors (46531840).

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

27993792 is a wasteful number, since it uses less digits than its factorization.

27993792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917 (or 907 counting only the distinct ones).

The product of its digits is 428652, while the sum is 48.

The square root of 27993792 is about 5290.9159887490. The cubic root of 27993792 is about 303.6364536903.

The spelling of 27993792 in words is "twenty-seven million, nine hundred ninety-three thousand, seven hundred ninety-two".