2208145 has 8 divisors (see below), whose sum is σ = 2658600. Its totient is φ = 1760640.

The previous prime is 2208131. The next prime is 2208203. The reversal of 2208145 is 5418022.

It can be written as a sum of positive squares in 4 ways, for example, as 88209 + 2119936 = 297^2 + 1456^2 .

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

It is not a de Polignac number, because 2208145 - 2⁹ = 2207633 is a prime.

It is a super-3 number, since 3×2208145³ = 32300111373337945875, which contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1581 + ... + 2629.

It is an arithmetic number, because the mean of its divisors is an integer number (332325).

2^2208145 is an apocalyptic number.

It is an amenable number.

2208145 is a deficient number, since it is larger than the sum of its proper divisors (450455).

2208145 is a wasteful number, since it uses less digits than its factorization.

2208145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1475.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 2208145 is about 1485.9828397394. The cubic root of 2208145 is about 130.2194518221.

The spelling of 2208145 in words is "two million, two hundred eight thousand, one hundred forty-five".