2403243440 has 80 divisors (see below), whose sum is σ = 6026468448. Its totient is φ = 886007808.

The previous prime is 2403243407. The next prime is 2403243457. The reversal of 2403243440 is 443423042.

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

It is a Harshad number since it is a multiple of its sum of digits (26).

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 15 ways as a sum of consecutive naturals, for example, 917012 + ... + 919628.

Almost surely, 2^2403243440 is an apocalyptic number.

2403243440 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 2403243440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3013234224).

2403243440 is an abundant number, since it is smaller than the sum of its proper divisors (3623225008).

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

2403243440 is a wasteful number, since it uses less digits than its factorization.

2403243440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3526 (or 3520 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 26.

The square root of 2403243440 is about 49022.8868998961. The cubic root of 2403243440 is about 1339.4687580072.

Adding to 2403243440 its reverse (443423042), we get a palindrome (2846666482).

The spelling of 2403243440 in words is "two billion, four hundred three million, two hundred forty-three thousand, four hundred forty".