3261281562 has 128 divisors (see below), whose sum is σ = 9511372800. Its totient is φ = 802483200.

The previous prime is 3261281539. The next prime is 3261281603. The reversal of 3261281562 is 2651821623.

3261281562 is a `hidden beast` number, since 3 + 2 + 6 + 12 + 81 + 562 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 58362 + ... + 99642.

It is an arithmetic number, because the mean of its divisors is an integer number (74307600).

Almost surely, 2^3261281562 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3261281562, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4755686400).

3261281562 is an abundant number, since it is smaller than the sum of its proper divisors (6250091238).

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

3261281562 is a wasteful number, since it uses less digits than its factorization.

3261281562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41329 (or 41323 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 3261281562 is about 57107.6313814537. The cubic root of 3261281562 is about 1482.9599821996.

The spelling of 3261281562 in words is "three billion, two hundred sixty-one million, two hundred eighty-one thousand, five hundred sixty-two".