3281139792 has 160 divisors (see below), whose sum is σ = 11330227200. Its totient is φ = 888112512.

The previous prime is 3281139781. The next prime is 3281139793. The reversal of 3281139792 is 2979311823.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3281139793) 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, 28903 + ... + 86009.

It is an arithmetic number, because the mean of its divisors is an integer number (70813920).

Almost surely, 2^3281139792 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 3281139792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5665113600).

3281139792 is an abundant number, since it is smaller than the sum of its proper divisors (8049087408).

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

3281139792 is a wasteful number, since it uses less digits than its factorization.

3281139792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57150 (or 57138 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 3281139792 is about 57281.2342045805. The cubic root of 3281139792 is about 1485.9638513632.

The spelling of 3281139792 in words is "three billion, two hundred eighty-one million, one hundred thirty-nine thousand, seven hundred ninety-two".