2188258 has 4 divisors (see below), whose sum is σ = 3282390. Its totient is φ = 1094128.

The previous prime is 2188237. The next prime is 2188261. The reversal of 2188258 is 8528812.

It is a happy number.

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., 1787569 + 400689 = 1337^2 + 633^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 547063 + ... + 547066.

2^2188258 is an apocalyptic number.

2188258 is a deficient number, since it is larger than the sum of its proper divisors (1094132).

2188258 is a wasteful number, since it uses less digits than its factorization.

2188258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094131.

The product of its digits is 10240, while the sum is 34.

The square root of 2188258 is about 1479.2761743501. The cubic root of 2188258 is about 129.8273447596.

The spelling of 2188258 in words is "two million, one hundred eighty-eight thousand, two hundred fifty-eight".