3500003520 has 840 divisors, whose sum is σ = 14578242624. Its totient is φ = 793608192.

The previous prime is 3500003519. The next prime is 3500003531. The reversal of 3500003520 is 253000053.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 3500003493 and 3500003502.

It is an unprimeable number.

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 119 ways as a sum of consecutive naturals, for example, 74468137 + ... + 74468183.

Almost surely, 2^3500003520 is an apocalyptic number.

3500003520 is a gapful number since it is divisible by the number (30) 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 3500003520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7289121312).

3500003520 is an abundant number, since it is smaller than the sum of its proper divisors (11078239104).

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

3500003520 is a wasteful number, since it uses less digits than its factorization.

3500003520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119 (or 87 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 18.

The square root of 3500003520 is about 59160.8275804184. The cubic root of 3500003520 is about 1518.2949949278.

Adding to 3500003520 its reverse (253000053), we get a palindrome (3753003573).

The spelling of 3500003520 in words is "three billion, five hundred million, three thousand, five hundred twenty".