2188330 has 8 divisors (see below), whose sum is σ = 3939012. Its totient is φ = 875328.

The previous prime is 2188327. The next prime is 2188331. The reversal of 2188330 is 338812.

It can be written as a sum of positive squares in 2 ways, for example, as 2140369 + 47961 = 1463^2 + 219^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 2188295 and 2188304.

It is not an unprimeable number, because it can be changed into a prime (2188331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109407 + ... + 109426.

2^2188330 is an apocalyptic number.

2188330 is a deficient number, since it is larger than the sum of its proper divisors (1750682).

2188330 is a wasteful number, since it uses less digits than its factorization.

2188330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218840.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 2188330 is about 1479.3005103764. The cubic root of 2188330 is about 129.8287686420.

The spelling of 2188330 in words is "two million, one hundred eighty-eight thousand, three hundred thirty".