22252536 has 64 divisors (see below), whose sum is σ = 62726400. Its totient is φ = 7308000.

The previous prime is 22252519. The next prime is 22252537. The reversal of 22252536 is 63525222.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22252537) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14611 + ... + 16061.

It is an arithmetic number, because the mean of its divisors is an integer number (980100).

Almost surely, 2^22252536 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 22252536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31363200).

22252536 is an abundant number, since it is smaller than the sum of its proper divisors (40473864).

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

22252536 is a wasteful number, since it uses less digits than its factorization.

22252536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1537 (or 1527 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 22252536 is about 4717.2593738314. The cubic root of 22252536 is about 281.2720018343.

Adding to 22252536 its reverse (63525222), we get a palindrome (85777758).

It can be divided in two parts, 2225 and 2536, that added together give a square (4761 = 69²).

The spelling of 22252536 in words is "twenty-two million, two hundred fifty-two thousand, five hundred thirty-six".