6393420 has 72 divisors (see below), whose sum is σ = 21162960. Its totient is φ = 1549440.

The previous prime is 6393403. The next prime is 6393421. The reversal of 6393420 is 243936.

6393420 is a `hidden beast` number, since 639 + 3 + 4 + 20 = 666.

It is not an unprimeable number, because it can be changed into a prime (6393421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 366 + ... + 3594.

It is an arithmetic number, because the mean of its divisors is an integer number (293930).

Almost surely, 2^6393420 is an apocalyptic number.

6393420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6393420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10581480).

6393420 is an abundant number, since it is smaller than the sum of its proper divisors (14769540).

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

6393420 is a wasteful number, since it uses less digits than its factorization.

6393420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3255 (or 3250 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 6393420 is about 2528.5213070093. The cubic root of 6393420 is about 185.5999030791.

The spelling of 6393420 in words is "six million, three hundred ninety-three thousand, four hundred twenty".