22504120 has 64 divisors (see below), whose sum is σ = 53835840. Its totient is φ = 8448000.

The previous prime is 22504091. The next prime is 22504123. The reversal of 22504120 is 2140522.

It is a junction number, because it is equal to n+sod(n) for n = 22504094 and 22504103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22504123) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 55920 + ... + 56320.

It is an arithmetic number, because the mean of its divisors is an integer number (841185).

Almost surely, 2^22504120 is an apocalyptic number.

22504120 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 22504120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26917920).

22504120 is an abundant number, since it is smaller than the sum of its proper divisors (31331720).

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

22504120 is a wasteful number, since it uses less digits than its factorization.

22504120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496 (or 492 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 22504120 is about 4743.8507565057. The cubic root of 22504120 is about 282.3280390279.

Adding to 22504120 its reverse (2140522), we get a palindrome (24644642).

The spelling of 22504120 in words is "twenty-two million, five hundred four thousand, one hundred twenty".