22452516 has 18 divisors (see below), whose sum is σ = 56755062. Its totient is φ = 7484160.

The previous prime is 22452503. The next prime is 22452517. The reversal of 22452516 is 61525422.

It can be written as a sum of positive squares in only one way, i.e., 22127616 + 324900 = 4704^2 + 570^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 22452516.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22452517) 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 5 ways as a sum of consecutive naturals, for example, 311805 + ... + 311876.

It is an arithmetic number, because the mean of its divisors is an integer number (3153059).

Almost surely, 2^22452516 is an apocalyptic number.

It is an amenable number.

22452516 is an abundant number, since it is smaller than the sum of its proper divisors (34302546).

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

22452516 is a wasteful number, since it uses less digits than its factorization.

22452516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623691 (or 623686 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 22452516 is about 4738.4085936103. The cubic root of 22452516 is about 282.1120725509.

Adding to 22452516 its reverse (61525422), we get a palindrome (83977938).

It can be divided in two parts, 2245 and 2516, that added together give a square (4761 = 69²).

The spelling of 22452516 in words is "twenty-two million, four hundred fifty-two thousand, five hundred sixteen".