2289564 has 18 divisors (see below), whose sum is σ = 5787600. Its totient is φ = 763176.

The previous prime is 2289503. The next prime is 2289571. The reversal of 2289564 is 4659822.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 63599 = 2289564 / (2 + 2 + 8 + 9 + 5 + 6 + 4).

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 31764 + ... + 31835.

2^2289564 is an apocalyptic number.

It is an amenable number.

2289564 is an abundant number, since it is smaller than the sum of its proper divisors (3498036).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2289564 is a wasteful number, since it uses less digits than its factorization.

2289564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63609 (or 63604 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 2289564 is about 1513.1305297297. The cubic root of 2289564 is about 131.8006633153.

The spelling of 2289564 in words is "two million, two hundred eighty-nine thousand, five hundred sixty-four".