27388992 has 56 divisors (see below), whose sum is σ = 74980800. Its totient is φ = 8813056.

The previous prime is 27388981. The next prime is 27388993. The reversal of 27388992 is 29988372.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (27388993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3109 + ... + 8027.

Almost surely, 2^27388992 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 27388992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37490400).

27388992 is an abundant number, since it is smaller than the sum of its proper divisors (47591808).

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

27388992 is a wasteful number, since it uses less digits than its factorization.

27388992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4963 (or 4953 counting only the distinct ones).

The product of its digits is 435456, while the sum is 48.

The square root of 27388992 is about 5233.4493405401. The cubic root of 27388992 is about 301.4338471344.

The spelling of 27388992 in words is "twenty-seven million, three hundred eighty-eight thousand, nine hundred ninety-two".