3505503420 has 144 divisors (see below), whose sum is σ = 11607872640. Its totient is φ = 885577536.

The previous prime is 3505503389. The next prime is 3505503461. The reversal of 3505503420 is 243055053.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 73359 + ... + 111321.

Almost surely, 2^3505503420 is an apocalyptic number.

3505503420 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 3505503420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5803936320).

3505503420 is an abundant number, since it is smaller than the sum of its proper divisors (8102369220).

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

3505503420 is a wasteful number, since it uses less digits than its factorization.

3505503420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38006 (or 37992 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 27.

The square root of 3505503420 is about 59207.2919495563. The cubic root of 3505503420 is about 1519.0898608413.

Adding to 3505503420 its reverse (243055053), we get a palindrome (3748558473).

The spelling of 3505503420 in words is "three billion, five hundred five million, five hundred three thousand, four hundred twenty".