2289505 has 8 divisors (see below), whose sum is σ = 2836224. Its totient is φ = 1772400.

The previous prime is 2289503. The next prime is 2289571. The reversal of 2289505 is 5059822.

2289505 = 36² + 37² + ... + 190².

It is a happy number.

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

It is not a de Polignac number, because 2289505 - 2¹ = 2289503 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2289503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7231 + ... + 7540.

It is an arithmetic number, because the mean of its divisors is an integer number (354528).

2^2289505 is an apocalyptic number.

It is an amenable number.

2289505 is a deficient number, since it is larger than the sum of its proper divisors (546719).

2289505 is a wasteful number, since it uses less digits than its factorization.

2289505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14807.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 2289505 is about 1513.1110335993. Note that the first 3 decimals coincide. The cubic root of 2289505 is about 131.7995311775.

The spelling of 2289505 in words is "two million, two hundred eighty-nine thousand, five hundred five".