2403523440 has 120 divisors (see below), whose sum is σ = 8086759200. Its totient is φ = 639754752.

The previous prime is 2403523439. The next prime is 2403523457. The reversal of 2403523440 is 443253042.

2403523440 is a `hidden beast` number, since 240 + 352 + 34 + 40 = 666.

2403523440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 428494 + ... + 434066.

It is an arithmetic number, because the mean of its divisors is an integer number (67389660).

Almost surely, 2^2403523440 is an apocalyptic number.

2403523440 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 2403523440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4043379600).

2403523440 is an abundant number, since it is smaller than the sum of its proper divisors (5683235760).

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

2403523440 is a wasteful number, since it uses less digits than its factorization.

2403523440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6191 (or 6182 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

The square root of 2403523440 is about 49025.7426256859. The cubic root of 2403523440 is about 1339.5207761370.

Adding to 2403523440 its reverse (443253042), we get a palindrome (2846776482).

The spelling of 2403523440 in words is "two billion, four hundred three million, five hundred twenty-three thousand, four hundred forty".