2189215 has 8 divisors (see below), whose sum is σ = 3002400. Its totient is φ = 1501152.

The previous prime is 2189207. The next prime is 2189219. The reversal of 2189215 is 5129812.

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

It is a cyclic number.

It is not a de Polignac number, because 2189215 - 2³ = 2189207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2189219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31240 + ... + 31309.

It is an arithmetic number, because the mean of its divisors is an integer number (375300).

2^2189215 is an apocalyptic number.

2189215 is a deficient number, since it is larger than the sum of its proper divisors (813185).

2189215 is an equidigital number, since it uses as much as digits as its factorization.

2189215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62561.

The product of its digits is 1440, while the sum is 28.

The square root of 2189215 is about 1479.5996080021. The cubic root of 2189215 is about 129.8462679794.

The spelling of 2189215 in words is "two million, one hundred eighty-nine thousand, two hundred fifteen".