3505212 has 18 divisors (see below), whose sum is σ = 8860488. Its totient is φ = 1168392.

The previous prime is 3505207. The next prime is 3505219. The reversal of 3505212 is 2125053.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×3505212² = 24573022329888, which contains 22 as substring.

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

It is a nialpdrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3505219) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 48648 + ... + 48719.

Almost surely, 2^3505212 is an apocalyptic number.

It is an amenable number.

3505212 is an abundant number, since it is smaller than the sum of its proper divisors (5355276).

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

3505212 is a wasteful number, since it uses less digits than its factorization.

3505212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97377 (or 97372 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 3505212 is about 1872.2211407844. The cubic root of 3505212 is about 151.9047764611.

The spelling of 3505212 in words is "three million, five hundred five thousand, two hundred twelve".