3421021600 has 72 divisors (see below), whose sum is σ = 8373799980. Its totient is φ = 1364766720.

The previous prime is 3421021589. The next prime is 3421021607. The reversal of 3421021600 is 61201243.

It can be written as a sum of positive squares in 6 ways, for example, as 343435024 + 3077586576 = 18532^2 + 55476^2 .

It is not an unprimeable number, because it can be changed into a prime (3421021607) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 305704 + ... + 316696.

Almost surely, 2^3421021600 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 3421021600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4186899990).

3421021600 is an abundant number, since it is smaller than the sum of its proper divisors (4952778380).

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

3421021600 is a wasteful number, since it uses less digits than its factorization.

3421021600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11402 (or 11389 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 3421021600 is about 58489.4999123774. The cubic root of 3421021600 is about 1506.7872572530.

Adding to 3421021600 its reverse (61201243), we get a palindrome (3482222843).

The spelling of 3421021600 in words is "three billion, four hundred twenty-one million, twenty-one thousand, six hundred".