22520512 has 56 divisors (see below), whose sum is σ = 54095904. Its totient is φ = 9080832.

The previous prime is 22520507. The next prime is 22520513. The reversal of 22520512 is 21502522.

It is a tau number, because it is divible by the number of its divisors (56).

It is a self number, because there is not a number n which added to its sum of digits gives 22520512.

It is not an unprimeable number, because it can be changed into a prime (22520513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6138 + ... + 9094.

Almost surely, 2^22520512 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 22520512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27047952).

22520512 is an abundant number, since it is smaller than the sum of its proper divisors (31575392).

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

22520512 is a wasteful number, since it uses less digits than its factorization.

22520512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2993 (or 2983 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 22520512 is about 4745.5781523435. The cubic root of 22520512 is about 282.3965716346.

It can be divided in two parts, 22520 and 512, that added together give a palindrome (23032).

The spelling of 22520512 in words is "twenty-two million, five hundred twenty thousand, five hundred twelve".