2188474 has 4 divisors (see below), whose sum is σ = 3282714. Its totient is φ = 1094236.

The previous prime is 2188463. The next prime is 2188481. The reversal of 2188474 is 4748812.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1117249 + 1071225 = 1057^2 + 1035^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 547117 + ... + 547120.

2^2188474 is an apocalyptic number.

2188474 is a deficient number, since it is larger than the sum of its proper divisors (1094240).

2188474 is a wasteful number, since it uses less digits than its factorization.

2188474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094239.

The product of its digits is 14336, while the sum is 34.

The square root of 2188474 is about 1479.3491812280. The cubic root of 2188474 is about 129.8316163132.

It can be divided in two parts, 2188 and 474, that added together give a palindrome (2662).

The spelling of 2188474 in words is "two million, one hundred eighty-eight thousand, four hundred seventy-four".