3420321320 has 32 divisors (see below), whose sum is σ = 8287702920. Its totient is φ = 1262887680.

The previous prime is 3420321293. The next prime is 3420321383. The reversal of 3420321320 is 231230243.

It can be written as a sum of positive squares in 4 ways, for example, as 1463674564 + 1956646756 = 38258^2 + 44234^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 3420321292 and 3420321301.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3288251 + ... + 3289290.

Almost surely, 2^3420321320 is an apocalyptic number.

It is an amenable number.

3420321320 is an abundant number, since it is smaller than the sum of its proper divisors (4867381600).

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

3420321320 is a wasteful number, since it uses less digits than its factorization.

3420321320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6577565 (or 6577561 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 3420321320 is about 58483.5132323632. The cubic root of 3420321320 is about 1506.6844375781.

Adding to 3420321320 its reverse (231230243), we get a palindrome (3651551563).

The spelling of 3420321320 in words is "three billion, four hundred twenty million, three hundred twenty-one thousand, three hundred twenty".