3503421840 has 80 divisors (see below), whose sum is σ = 11009438208. Its totient is φ = 921443328.

The previous prime is 3503421839. The next prime is 3503421851. The reversal of 3503421840 is 481243053.

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 (30).

It is a junction number, because it is equal to n+sod(n) for n = 3503421798 and 3503421807.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82464 + ... + 117503.

Almost surely, 2^3503421840 is an apocalyptic number.

3503421840 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3503421840 is an abundant number, since it is smaller than the sum of its proper divisors (7506016368).

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

3503421840 is a wasteful number, since it uses less digits than its factorization.

3503421840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200056 (or 200050 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 3503421840 is about 59189.7105922981. The cubic root of 3503421840 is about 1518.7891210435.

Adding to 3503421840 its reverse (481243053), we get a palindrome (3984664893).

The spelling of 3503421840 in words is "three billion, five hundred three million, four hundred twenty-one thousand, eight hundred forty".