27128484 has 18 divisors (see below), whose sum is σ = 68574870. Its totient is φ = 9042816.

The previous prime is 27128473. The next prime is 27128531. The reversal of 27128484 is 48482172.

It can be written as a sum of positive squares in only one way, i.e., 23040000 + 4088484 = 4800^2 + 2022^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 753569 = 27128484 / (2 + 7 + 1 + 2 + 8 + 4 + 8 + 4).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 376749 + ... + 376820.

It is an arithmetic number, because the mean of its divisors is an integer number (3809715).

Almost surely, 2^27128484 is an apocalyptic number.

It is an amenable number.

27128484 is an abundant number, since it is smaller than the sum of its proper divisors (41446386).

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

27128484 is a wasteful number, since it uses less digits than its factorization.

27128484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753579 (or 753574 counting only the distinct ones).

The product of its digits is 28672, while the sum is 36.

The square root of 27128484 is about 5208.5011279638. The cubic root of 27128484 is about 300.4751138256.

The spelling of 27128484 in words is "twenty-seven million, one hundred twenty-eight thousand, four hundred eighty-four".