3231743928 has 128 divisors (see below), whose sum is σ = 9923212800. Its totient is φ = 856018944.

The previous prime is 3231743927. The next prime is 3231743941. The reversal of 3231743928 is 8293471323.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 3231743928.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3231743927) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 182908 + ... + 199796.

It is an arithmetic number, because the mean of its divisors is an integer number (77525100).

Almost surely, 2^3231743928 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 3231743928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4961606400).

3231743928 is an abundant number, since it is smaller than the sum of its proper divisors (6691468872).

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

3231743928 is a wasteful number, since it uses less digits than its factorization.

3231743928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16989 (or 16985 counting only the distinct ones).

The product of its digits is 217728, while the sum is 42.

The square root of 3231743928 is about 56848.4294242154. The cubic root of 3231743928 is about 1478.4693098081.

It can be divided in two parts, 32317 and 43928, that added together give a triangular number (76245 = T₃₉₀).

The spelling of 3231743928 in words is "three billion, two hundred thirty-one million, seven hundred forty-three thousand, nine hundred twenty-eight".