3955231728 has 160 divisors (see below), whose sum is σ = 13001945600. Its totient is φ = 1127706624.

The previous prime is 3955231711. The next prime is 3955231733. The reversal of 3955231728 is 8271325593.

3955231728 is a `hidden beast` number, since 3 + 95 + 523 + 17 + 28 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1870800 + ... + 1872912.

It is an arithmetic number, because the mean of its divisors is an integer number (81262160).

Almost surely, 2^3955231728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3955231728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6500972800).

3955231728 is an abundant number, since it is smaller than the sum of its proper divisors (9046713872).

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

3955231728 is a wasteful number, since it uses less digits than its factorization.

3955231728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2756 (or 2744 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 3955231728 is about 62890.6330704343. The cubic root of 3955231728 is about 1581.4567198731.

The spelling of 3955231728 in words is "three billion, nine hundred fifty-five million, two hundred thirty-one thousand, seven hundred twenty-eight".