2223732 has 48 divisors (see below), whose sum is σ = 6193152. Its totient is φ = 607200.

The previous prime is 2223731. The next prime is 2223743. The reversal of 2223732 is 2373222.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a nude number because it is divisible by every one of its digits.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 2223699 and 2223708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2223731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1357 + ... + 2507.

It is an arithmetic number, because the mean of its divisors is an integer number (129024).

2^2223732 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2223732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3096576).

2223732 is an abundant number, since it is smaller than the sum of its proper divisors (3969420).

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

2223732 is a wasteful number, since it uses less digits than its factorization.

2223732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1188 (or 1186 counting only the distinct ones).

The product of its digits is 1008, while the sum is 21.

The square root of 2223732 is about 1491.2182938792. The cubic root of 2223732 is about 130.5251342496.

Adding to 2223732 its reverse (2373222), we get a palindrome (4596954).

The spelling of 2223732 in words is "two million, two hundred twenty-three thousand, seven hundred thirty-two".