3523421440 has 216 divisors, whose sum is σ = 10712211552. Its totient is φ = 1097994240.

The previous prime is 3523421417. The next prime is 3523421443. The reversal of 3523421440 is 441243253.

It is a happy number.

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 = 3523421399 and 3523421408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3523421443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 687367 + ... + 692473.

It is an arithmetic number, because the mean of its divisors is an integer number (49593572).

Almost surely, 2^3523421440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3523421440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5356105776).

3523421440 is an abundant number, since it is smaller than the sum of its proper divisors (7188790112).

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

3523421440 is a wasteful number, since it uses less digits than its factorization.

3523421440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5153 (or 5132 counting only the distinct ones).

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

The square root of 3523421440 is about 59358.4150731807. The cubic root of 3523421440 is about 1521.6736873422.

Adding to 3523421440 its reverse (441243253), we get a palindrome (3964664693).

The spelling of 3523421440 in words is "three billion, five hundred twenty-three million, four hundred twenty-one thousand, four hundred forty".