2213538 has 16 divisors (see below), whose sum is σ = 4660320. Its totient is φ = 698976.

The previous prime is 2213537. The next prime is 2213551. The reversal of 2213538 is 8353122.

It is an Ulam number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2213531) 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, 9595 + ... + 9822.

It is an arithmetic number, because the mean of its divisors is an integer number (291270).

2^2213538 is an apocalyptic number.

2213538 is an abundant number, since it is smaller than the sum of its proper divisors (2446782).

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

2213538 is a wasteful number, since it uses less digits than its factorization.

2213538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19441.

The product of its digits is 1440, while the sum is 24.

The square root of 2213538 is about 1487.7963570328. The cubic root of 2213538 is about 130.3253782222.

The spelling of 2213538 in words is "two million, two hundred thirteen thousand, five hundred thirty-eight".