3172609856 has 28 divisors (see below), whose sum is σ = 6779930052. Its totient is φ = 1464281088.

The previous prime is 3172609801. The next prime is 3172609877. The reversal of 3172609856 is 6589062713.

It can be written as a sum of positive squares in 2 ways, for example, as 1571329600 + 1601280256 = 39640^2 + 40016^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3172609856.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1905785 + ... + 1907448.

It is an arithmetic number, because the mean of its divisors is an integer number (242140359).

Almost surely, 2^3172609856 is an apocalyptic number.

It is an amenable number.

3172609856 is an abundant number, since it is smaller than the sum of its proper divisors (3607320196).

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

3172609856 is a wasteful number, since it uses less digits than its factorization.

3172609856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3813258 (or 3813248 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 47.

The square root of 3172609856 is about 56325.9252564927. The cubic root of 3172609856 is about 1469.3961232261.

The spelling of 3172609856 in words is "three billion, one hundred seventy-two million, six hundred nine thousand, eight hundred fifty-six".