6403072 has 66 divisors (see below), whose sum is σ = 14234838. Its totient is φ = 2875392.

The previous prime is 6403063. The next prime is 6403127. The reversal of 6403072 is 2703046.

It can be written as a sum of positive squares in 3 ways, for example, as 331776 + 6071296 = 576^2 + 2464^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 173038 + ... + 173074.

Almost surely, 2^6403072 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 6403072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7117419).

6403072 is an abundant number, since it is smaller than the sum of its proper divisors (7831766).

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

6403072 is a wasteful number, since it uses less digits than its factorization.

6403072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83 (or 52 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 6403072 is about 2530.4292126041. The cubic root of 6403072 is about 185.6932547613.

The spelling of 6403072 in words is "six million, four hundred three thousand, seventy-two".