22303332 has 18 divisors (see below), whose sum is σ = 56377958. Its totient is φ = 7434432.

The previous prime is 22303331. The next prime is 22303343. The reversal of 22303332 is 23330322.

It can be written as a sum of positive squares in only one way, i.e., 19501056 + 2802276 = 4416^2 + 1674^2 .

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 (18).

It is not an unprimeable number, because it can be changed into a prime (22303331) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 309733 + ... + 309804.

Almost surely, 2^22303332 is an apocalyptic number.

It is an amenable number.

22303332 is an abundant number, since it is smaller than the sum of its proper divisors (34074626).

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

22303332 is a wasteful number, since it uses less digits than its factorization.

22303332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619547 (or 619542 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 18.

The square root of 22303332 is about 4722.6403631867. The cubic root of 22303332 is about 281.4858596315.

Adding to 22303332 its reverse (23330322), we get a palindrome (45633654).

The spelling of 22303332 in words is "twenty-two million, three hundred three thousand, three hundred thirty-two".