3505520412 has 36 divisors (see below), whose sum is σ = 8863008336. Its totient is φ = 1168265280.

The previous prime is 3505520401. The next prime is 3505520419. The reversal of 3505520412 is 2140255053.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3505520419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 285112 + ... + 297152.

It is an arithmetic number, because the mean of its divisors is an integer number (246194676).

Almost surely, 2^3505520412 is an apocalyptic number.

It is an amenable number.

3505520412 is an abundant number, since it is smaller than the sum of its proper divisors (5357487924).

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

3505520412 is a wasteful number, since it uses less digits than its factorization.

3505520412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20138 (or 20133 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 3505520412 is about 59207.4354452209. The cubic root of 3505520412 is about 1519.0923152993.

Adding to 3505520412 its reverse (2140255053), we get a palindrome (5645775465).

The spelling of 3505520412 in words is "three billion, five hundred five million, five hundred twenty thousand, four hundred twelve".