2423531440 has 80 divisors (see below), whose sum is σ = 6194174976. Its totient is φ = 874515200.

The previous prime is 2423531419. The next prime is 2423531449. The reversal of 2423531440 is 441353242.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 2423531399 and 2423531408.

It is not an unprimeable number, because it can be changed into a prime (2423531449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104769 + ... + 125791.

Almost surely, 2^2423531440 is an apocalyptic number.

2423531440 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 2423531440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3097087488).

2423531440 is an abundant number, since it is smaller than the sum of its proper divisors (3770643536).

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

2423531440 is a wasteful number, since it uses less digits than its factorization.

2423531440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21178 (or 21172 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 2423531440 is about 49229.3757831643. The cubic root of 2423531440 is about 1343.2274323859.

Adding to 2423531440 its reverse (441353242), we get a palindrome (2864884682).

The spelling of 2423531440 in words is "two billion, four hundred twenty-three million, five hundred thirty-one thousand, four hundred forty".