3205409172 has 48 divisors (see below), whose sum is σ = 8550729600. Its totient is φ = 915512832.

The previous prime is 3205409093. The next prime is 3205409201. The reversal of 3205409172 is 2719045023.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 349704 + ... + 358752.

It is an arithmetic number, because the mean of its divisors is an integer number (178140200).

Almost surely, 2^3205409172 is an apocalyptic number.

It is an amenable number.

3205409172 is an abundant number, since it is smaller than the sum of its proper divisors (5345320428).

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

3205409172 is a wasteful number, since it uses less digits than its factorization.

3205409172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13280 (or 13278 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 3205409172 is about 56616.3330850736. Note that the first 3 decimals coincide. The cubic root of 3205409172 is about 1474.4424470508.

The spelling of 3205409172 in words is "three billion, two hundred five million, four hundred nine thousand, one hundred seventy-two".