22401332 has 6 divisors (see below), whose sum is σ = 39202338. Its totient is φ = 11200664.

The previous prime is 22401331. The next prime is 22401341. The reversal of 22401332 is 23310422.

It can be written as a sum of positive squares in only one way, i.e., 19324816 + 3076516 = 4396^2 + 1754^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22401332.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22401331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2800163 + ... + 2800170.

It is an arithmetic number, because the mean of its divisors is an integer number (6533723).

Almost surely, 2^22401332 is an apocalyptic number.

It is an amenable number.

22401332 is a deficient number, since it is larger than the sum of its proper divisors (16801006).

22401332 is a wasteful number, since it uses less digits than its factorization.

22401332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5600337 (or 5600335 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 22401332 is about 4733.0045425712. The cubic root of 22401332 is about 281.8975366730.

Adding to 22401332 its reverse (23310422), we get a palindrome (45711754).

The spelling of 22401332 in words is "twenty-two million, four hundred one thousand, three hundred thirty-two".