3220404730 has 8 divisors (see below), whose sum is σ = 5796728532. Its totient is φ = 1288161888.

The previous prime is 3220404697. The next prime is 3220404739. The reversal of 3220404730 is 374040223.

It can be written as a sum of positive squares in 2 ways, for example, as 3209335801 + 11068929 = 56651^2 + 3327^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 3220404695 and 3220404704.

It is not an unprimeable number, because it can be changed into a prime (3220404739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161020227 + ... + 161020246.

Almost surely, 2^3220404730 is an apocalyptic number.

3220404730 is a deficient number, since it is larger than the sum of its proper divisors (2576323802).

3220404730 is a wasteful number, since it uses less digits than its factorization.

3220404730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322040480.

The product of its (nonzero) digits is 4032, while the sum is 25.

The square root of 3220404730 is about 56748.6099389227. The cubic root of 3220404730 is about 1476.7381184071.

Adding to 3220404730 its reverse (374040223), we get a palindrome (3594444953).

The spelling of 3220404730 in words is "three billion, two hundred twenty million, four hundred four thousand, seven hundred thirty".