22263520 has 48 divisors (see below), whose sum is σ = 52880688. Its totient is φ = 8857600.

The previous prime is 22263509. The next prime is 22263539. The reversal of 22263520 is 2536222.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22263491 and 22263500.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55320 + ... + 55720.

It is an arithmetic number, because the mean of its divisors is an integer number (1101681).

Almost surely, 2^22263520 is an apocalyptic number.

22263520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22263520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26440344).

22263520 is an abundant number, since it is smaller than the sum of its proper divisors (30617168).

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

22263520 is a wasteful number, since it uses less digits than its factorization.

22263520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763 (or 755 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 22263520 is about 4718.4234655232. The cubic root of 22263520 is about 281.3182734664.

Adding to 22263520 its reverse (2536222), we get a palindrome (24799742).

The spelling of 22263520 in words is "twenty-two million, two hundred sixty-three thousand, five hundred twenty".