3261534540 has 96 divisors (see below), whose sum is σ = 10111336704. Its totient is φ = 778863360.

The previous prime is 3261534533. The next prime is 3261534557. The reversal of 3261534540 is 454351623.

It is a super-2 number, since 2×3261534540² = 21275215111226023200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

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 31 ways as a sum of consecutive naturals, for example, 7342 + ... + 81098.

It is an arithmetic number, because the mean of its divisors is an integer number (105326424).

Almost surely, 2^3261534540 is an apocalyptic number.

3261534540 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 3261534540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5055668352).

3261534540 is an abundant number, since it is smaller than the sum of its proper divisors (6849802164).

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

3261534540 is a wasteful number, since it uses less digits than its factorization.

3261534540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73847 (or 73845 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 33.

The square root of 3261534540 is about 57109.8462613935. The cubic root of 3261534540 is about 1482.9983256691.

The spelling of 3261534540 in words is "three billion, two hundred sixty-one million, five hundred thirty-four thousand, five hundred forty".