22304213524 has 6 divisors (see below), whose sum is σ = 39032373674. Its totient is φ = 11152106760.

The previous prime is 22304213521. The next prime is 22304213567. The reversal of 22304213524 is 42531240322.

It can be written as a sum of positive squares in only one way, i.e., 21077813124 + 1226400400 = 145182^2 + 35020^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22304213492 and 22304213501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22304213521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2788026687 + ... + 2788026694.

Almost surely, 2^22304213524 is an apocalyptic number.

It is an amenable number.

22304213524 is a deficient number, since it is larger than the sum of its proper divisors (16728160150).

22304213524 is a wasteful number, since it uses less digits than its factorization.

22304213524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5576053385 (or 5576053383 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 22304213524 its reverse (42531240322), we get a palindrome (64835453846).

The spelling of 22304213524 in words is "twenty-two billion, three hundred four million, two hundred thirteen thousand, five hundred twenty-four".