3421253440 has 112 divisors (see below), whose sum is σ = 8916277824. Its totient is φ = 1240064000.

The previous prime is 3421253401. The next prime is 3421253447. The reversal of 3421253440 is 443521243.

It is a happy number.

3421253440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 3421253399 and 3421253408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3421253447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1220040 + ... + 1222840.

Almost surely, 2^3421253440 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 3421253440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4458138912).

3421253440 is an abundant number, since it is smaller than the sum of its proper divisors (5495024384).

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

3421253440 is a wasteful number, since it uses less digits than its factorization.

3421253440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3176 (or 3166 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 3421253440 is about 58491.4817729898. The cubic root of 3421253440 is about 1506.8212944216.

Adding to 3421253440 its reverse (443521243), we get a palindrome (3864774683).

The spelling of 3421253440 in words is "three billion, four hundred twenty-one million, two hundred fifty-three thousand, four hundred forty".