22438201240 has 128 divisors (see below), whose sum is σ = 65407104000. Its totient is φ = 6727546368.

The previous prime is 22438201237. The next prime is 22438201243. The reversal of 22438201240 is 4210283422.

It is an interprime number because it is at equal distance from previous prime (22438201237) and next prime (22438201243).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 22438201199 and 22438201208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22438201243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 93060 + ... + 231379.

It is an arithmetic number, because the mean of its divisors is an integer number (510993000).

Almost surely, 2^22438201240 is an apocalyptic number.

22438201240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22438201240 is an abundant number, since it is smaller than the sum of its proper divisors (42968902760).

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

22438201240 is a wasteful number, since it uses less digits than its factorization.

22438201240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324489 (or 324485 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 22438201240 its reverse (4210283422), we get a palindrome (26648484662).

The spelling of 22438201240 in words is "twenty-two billion, four hundred thirty-eight million, two hundred one thousand, two hundred forty".