3220304240 has 20 divisors (see below), whose sum is σ = 7487207544. Its totient is φ = 1288121664.

The previous prime is 3220304239. The next prime is 3220304251. The reversal of 3220304240 is 424030223.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20126822 + ... + 20126981.

Almost surely, 2^3220304240 is an apocalyptic number.

It is an amenable number.

3220304240 is an abundant number, since it is smaller than the sum of its proper divisors (4266903304).

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

3220304240 is a wasteful number, since it uses less digits than its factorization.

3220304240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40253816 (or 40253810 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 3220304240 is about 56747.7245358790. The cubic root of 3220304240 is about 1476.7227581268.

Adding to 3220304240 its reverse (424030223), we get a palindrome (3644334463).

The spelling of 3220304240 in words is "three billion, two hundred twenty million, three hundred four thousand, two hundred forty".