2188548 has 18 divisors (see below), whose sum is σ = 5532254. Its totient is φ = 729504.

The previous prime is 2188541. The next prime is 2188583. The reversal of 2188548 is 8458812.

It can be written as a sum of positive squares in only one way, i.e., 2022084 + 166464 = 1422^2 + 408^2 .

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: 60793 = 2188548 / (2 + 1 + 8 + 8 + 5 + 4 + 8).

It is not an unprimeable number, because it can be changed into a prime (2188541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30361 + ... + 30432.

2^2188548 is an apocalyptic number.

It is an amenable number.

2188548 is an abundant number, since it is smaller than the sum of its proper divisors (3343706).

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

2188548 is a wasteful number, since it uses less digits than its factorization.

2188548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60803 (or 60798 counting only the distinct ones).

The product of its digits is 20480, while the sum is 36.

The square root of 2188548 is about 1479.3741920150. The cubic root of 2188548 is about 129.8330796512.

The spelling of 2188548 in words is "two million, one hundred eighty-eight thousand, five hundred forty-eight".