22201440 has 96 divisors (see below), whose sum is σ = 73011456. Its totient is φ = 5660160.

The previous prime is 22201429. The next prime is 22201451. The reversal of 22201440 is 4410222.

It is an interprime number because it is at equal distance from previous prime (22201429) and next prime (22201451).

It is a tau number, because it is divible by the number of its divisors (96).

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 15 ways as a sum of consecutive naturals, for example, 10035 + ... + 12045.

It is an arithmetic number, because the mean of its divisors is an integer number (760536).

Almost surely, 2^22201440 is an apocalyptic number.

22201440 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 22201440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36505728).

22201440 is an abundant number, since it is smaller than the sum of its proper divisors (50810016).

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

22201440 is a wasteful number, since it uses less digits than its factorization.

22201440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2052 (or 2044 counting only the distinct ones).

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

The square root of 22201440 is about 4711.8404047675. The cubic root of 22201440 is about 281.0565524067.

Adding to 22201440 its reverse (4410222), we get a palindrome (26611662).

The spelling of 22201440 in words is "twenty-two million, two hundred one thousand, four hundred forty".