22041000 has 192 divisors, whose sum is σ = 77875200. Its totient is φ = 5616000.

The previous prime is 22040981. The next prime is 22041001. The reversal of 22041000 is 14022.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22041001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 278961 + ... + 279039.

It is an arithmetic number, because the mean of its divisors is an integer number (405600).

Almost surely, 2^22041000 is an apocalyptic number.

22041000 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 22041000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38937600).

22041000 is an abundant number, since it is smaller than the sum of its proper divisors (55834200).

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

22041000 is a wasteful number, since it uses less digits than its factorization.

22041000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137 (or 120 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 22041000 is about 4694.7843400949. The cubic root of 22041000 is about 280.3778911250.

Adding to 22041000 its reverse (14022), we get a palindrome (22055022).

The spelling of 22041000 in words is "twenty-two million, forty-one thousand".