23422003440 has 160 divisors (see below), whose sum is σ = 81350078976. Its totient is φ = 5524577280.

The previous prime is 23422003433. The next prime is 23422003463. The reversal of 23422003440 is 4430022432.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 23422003440.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22212 + ... + 217571.

Almost surely, 2^23422003440 is an apocalyptic number.

23422003440 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 23422003440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40675039488).

23422003440 is an abundant number, since it is smaller than the sum of its proper divisors (57928075536).

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

23422003440 is a wasteful number, since it uses less digits than its factorization.

23422003440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239847 (or 239841 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

Adding to 23422003440 its reverse (4430022432), we get a palindrome (27852025872).

The spelling of 23422003440 in words is "twenty-three billion, four hundred twenty-two million, three thousand, four hundred forty".