3504502040 has 128 divisors (see below), whose sum is σ = 8744500800. Its totient is φ = 1255987200.

The previous prime is 3504502007. The next prime is 3504502049. The reversal of 3504502040 is 402054053.

It is a junction number, because it is equal to n+sod(n) for n = 3504501997 and 3504502015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3504502049) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2782931 + ... + 2784189.

Almost surely, 2^3504502040 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 3504502040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4372250400).

3504502040 is an abundant number, since it is smaller than the sum of its proper divisors (5239998760).

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

3504502040 is a wasteful number, since it uses less digits than its factorization.

3504502040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1437 (or 1433 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 3504502040 is about 59198.8347858300. The cubic root of 3504502040 is about 1518.9451996336.

Adding to 3504502040 its reverse (402054053), we get a palindrome (3906556093).

The spelling of 3504502040 in words is "three billion, five hundred four million, five hundred two thousand, forty".