3240805812 has 96 divisors (see below), whose sum is σ = 8194572288. Its totient is φ = 993129984.

The previous prime is 3240805783. The next prime is 3240805819. The reversal of 3240805812 is 2185080423.

It is a super-2 number, since 2×3240805812² = 21005644622185958688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3240805819) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1734903 + ... + 1736769.

It is an arithmetic number, because the mean of its divisors is an integer number (85360128).

Almost surely, 2^3240805812 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3240805812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4097286144).

3240805812 is an abundant number, since it is smaller than the sum of its proper divisors (4953766476).

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

3240805812 is a wasteful number, since it uses less digits than its factorization.

3240805812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2085 (or 2083 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 3240805812 is about 56928.0757798821. The cubic root of 3240805812 is about 1479.8499074720.

The spelling of 3240805812 in words is "three billion, two hundred forty million, eight hundred five thousand, eight hundred twelve".