27440128 has 44 divisors (see below), whose sum is σ = 55547392. Its totient is φ = 13547520.

The previous prime is 27440117. The next prime is 27440131. The reversal of 27440128 is 82104472.

It is a junction number, because it is equal to n+sod(n) for n = 27440096 and 27440105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129943 + ... + 130153.

Almost surely, 2^27440128 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 27440128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27773696).

27440128 is an abundant number, since it is smaller than the sum of its proper divisors (28107264).

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

27440128 is a wasteful number, since it uses less digits than its factorization.

27440128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358 (or 340 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 27440128 is about 5238.3325591260. The cubic root of 27440128 is about 301.6213255963.

The spelling of 27440128 in words is "twenty-seven million, four hundred forty thousand, one hundred twenty-eight".