3205305240 has 64 divisors (see below), whose sum is σ = 9620501760. Its totient is φ = 854340480.

The previous prime is 3205305211. The next prime is 3205305283. The reversal of 3205305240 is 425035023.

3205305240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 3205305240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 312595 + ... + 322685.

It is an arithmetic number, because the mean of its divisors is an integer number (150320340).

Almost surely, 2^3205305240 is an apocalyptic number.

3205305240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3205305240 is an abundant number, since it is smaller than the sum of its proper divisors (6415196520).

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

3205305240 is a wasteful number, since it uses less digits than its factorization.

3205305240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12752 (or 12748 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 24.

The square root of 3205305240 is about 56615.4152152927. The cubic root of 3205305240 is about 1474.4265111332.

The spelling of 3205305240 in words is "three billion, two hundred five million, three hundred five thousand, two hundred forty".