3261281560 has 32 divisors (see below), whose sum is σ = 7351961040. Its totient is φ = 1302009984.

The previous prime is 3261281539. The next prime is 3261281603. The reversal of 3261281560 is 651821623.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57027 + ... + 98866.

Almost surely, 2^3261281560 is an apocalyptic number.

It is an amenable number.

3261281560 is an abundant number, since it is smaller than the sum of its proper divisors (4090679480).

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

3261281560 is a wasteful number, since it uses less digits than its factorization.

3261281560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156427 (or 156423 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 3261281560 is about 57107.6313639429. The cubic root of 3261281560 is about 1482.9599818965.

The spelling of 3261281560 in words is "three billion, two hundred sixty-one million, two hundred eighty-one thousand, five hundred sixty".