22563450 has 288 divisors, whose sum is σ = 81244800. Its totient is φ = 4354560.

The previous prime is 22563449. The next prime is 22563481. The reversal of 22563450 is 5436522.

22563450 is a `hidden beast` number, since 2 + 25 + 634 + 5 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 778036 + ... + 778064.

It is an arithmetic number, because the mean of its divisors is an integer number (282100).

Almost surely, 2^22563450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22563450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40622400).

22563450 is an abundant number, since it is smaller than the sum of its proper divisors (58681350).

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

22563450 is a wasteful number, since it uses less digits than its factorization.

22563450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86 (or 78 counting only the distinct ones).

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

The square root of 22563450 is about 4750.0999989474. The cubic root of 22563450 is about 282.5759317647.

Adding to 22563450 its reverse (5436522), we get a palindrome (27999972).

The spelling of 22563450 in words is "twenty-two million, five hundred sixty-three thousand, four hundred fifty".