3261376260 has 72 divisors (see below), whose sum is σ = 9931475736. Its totient is φ = 866304000.

The previous prime is 3261376243. The next prime is 3261376291. The reversal of 3261376260 is 626731623.

3261376260 is a `hidden beast` number, since 3 + 26 + 1 + 3 + 7 + 626 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1555355844 + 1706020416 = 39438^2 + 41304^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11010 + ... + 81510.

It is an arithmetic number, because the mean of its divisors is an integer number (137937163).

Almost surely, 2^3261376260 is an apocalyptic number.

3261376260 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3261376260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4965737868).

3261376260 is an abundant number, since it is smaller than the sum of its proper divisors (6670099476).

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

3261376260 is a wasteful number, since it uses less digits than its factorization.

3261376260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70773 (or 70768 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 36.

The square root of 3261376260 is about 57108.4604940459. The cubic root of 3261376260 is about 1482.9743356557.

It can be divided in two parts, 3261376 and 260, that added together give a square (3261636 = 1806²).

The spelling of 3261376260 in words is "three billion, two hundred sixty-one million, three hundred seventy-six thousand, two hundred sixty".