22004460 has 180 divisors, whose sum is σ = 74888352. Its totient is φ = 5405184.

The previous prime is 22004459. The next prime is 22004461. The reversal of 22004460 is 6440022.

22004460 is a `hidden beast` number, since 2 + 200 + 4 + 460 = 666.

It is an interprime number because it is at equal distance from previous prime (22004459) and next prime (22004461).

It is a tau number, because it is divible by the number of its divisors (180).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (22004461) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 468157 + ... + 468203.

Almost surely, 2^22004460 is an apocalyptic number.

22004460 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 22004460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37444176).

22004460 is an abundant number, since it is smaller than the sum of its proper divisors (52883892).

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

22004460 is a wasteful number, since it uses less digits than its factorization.

22004460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102 (or 74 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 22004460 is about 4690.8911733273. The cubic root of 22004460 is about 280.2228667792. Note that the first 3 decimals are identical.

Adding to 22004460 its reverse (6440022), we get a palindrome (28444482).

The spelling of 22004460 in words is "twenty-two million, four thousand, four hundred sixty".