22245504 has 64 divisors (see below), whose sum is σ = 62220000. Its totient is φ = 7022592.

The previous prime is 22245497. The next prime is 22245521. The reversal of 22245504 is 40554222.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5772 + ... + 8820.

Almost surely, 2^22245504 is an apocalyptic number.

22245504 is a gapful number since it is divisible by the number (24) 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 22245504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31110000).

22245504 is an abundant number, since it is smaller than the sum of its proper divisors (39974496).

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

22245504 is a wasteful number, since it uses less digits than its factorization.

22245504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3085 (or 3073 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 22245504 is about 4716.5139669039. The cubic root of 22245504 is about 281.2423705585.

Adding to 22245504 its reverse (40554222), we get a palindrome (62799726).

The spelling of 22245504 in words is "twenty-two million, two hundred forty-five thousand, five hundred four".