2238564 has 24 divisors (see below), whose sum is σ = 5277888. Its totient is φ = 738400.

The previous prime is 2238557. The next prime is 2238569. The reversal of 2238564 is 4658322.

It is a super-2 number, since 2×2238564² = 10022337564192, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2⁷ + 2²¹ + 3¹⁰ + 8 + 5⁷ + 6 + 4⁶ .

It is not an unprimeable number, because it can be changed into a prime (2238569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 289 + ... + 2135.

It is an arithmetic number, because the mean of its divisors is an integer number (219912).

2^2238564 is an apocalyptic number.

It is an amenable number.

2238564 is an abundant number, since it is smaller than the sum of its proper divisors (3039324).

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

2238564 is a wasteful number, since it uses less digits than its factorization.

2238564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1955 (or 1953 counting only the distinct ones).

The product of its digits is 11520, while the sum is 30.

The square root of 2238564 is about 1496.1831438698. The cubic root of 2238564 is about 130.8146866020.

The spelling of 2238564 in words is "two million, two hundred thirty-eight thousand, five hundred sixty-four".