3261688038 has 72 divisors (see below), whose sum is σ = 8244484560. Its totient is φ = 929224800.

The previous prime is 3261687997. The next prime is 3261688049. The reversal of 3261688038 is 8308861623.

It is a junction number, because it is equal to n+sod(n) for n = 3261687984 and 3261688002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 311488 + ... + 321788.

It is an arithmetic number, because the mean of its divisors is an integer number (114506730).

Almost surely, 2^3261688038 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3261688038, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4122242280).

3261688038 is an abundant number, since it is smaller than the sum of its proper divisors (4982796522).

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

3261688038 is a wasteful number, since it uses less digits than its factorization.

3261688038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10682 (or 10672 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The square root of 3261688038 is about 57111.1901294309. The cubic root of 3261688038 is about 1483.0215901482.

The spelling of 3261688038 in words is "three billion, two hundred sixty-one million, six hundred eighty-eight thousand, thirty-eight".