3405128180 has 12 divisors (see below), whose sum is σ = 7150769220. Its totient is φ = 1362051264.

The previous prime is 3405128179. The next prime is 3405128189. The reversal of 3405128180 is 818215043.

It can be written as a sum of positive squares in 2 ways, for example, as 1907592976 + 1497535204 = 43676^2 + 38698^2 .

It is a super-2 number, since 2×3405128180² = 23189795844460224800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3405128189) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 85128185 + ... + 85128224.

It is an arithmetic number, because the mean of its divisors is an integer number (595897435).

Almost surely, 2^3405128180 is an apocalyptic number.

It is an amenable number.

3405128180 is an abundant number, since it is smaller than the sum of its proper divisors (3745641040).

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

3405128180 is a wasteful number, since it uses less digits than its factorization.

3405128180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170256418 (or 170256416 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 3405128180 is about 58353.4761603797. The cubic root of 3405128180 is about 1504.4502180567.

The spelling of 3405128180 in words is "three billion, four hundred five million, one hundred twenty-eight thousand, one hundred eighty".