22041240 has 128 divisors (see below), whose sum is σ = 72576000. Its totient is φ = 5322240.

The previous prime is 22041223. The next prime is 22041259. The reversal of 22041240 is 4214022.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 110661 + ... + 110859.

It is an arithmetic number, because the mean of its divisors is an integer number (567000).

Almost surely, 2^22041240 is an apocalyptic number.

22041240 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 22041240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36288000).

22041240 is an abundant number, since it is smaller than the sum of its proper divisors (50534760).

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

22041240 is a wasteful number, since it uses less digits than its factorization.

22041240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297 (or 293 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 22041240 is about 4694.8099003048. The cubic root of 22041240 is about 280.3789087808.

Adding to 22041240 its reverse (4214022), we get a palindrome (26255262).

The spelling of 22041240 in words is "twenty-two million, forty-one thousand, two hundred forty".