6392340 has 72 divisors (see below), whose sum is σ = 20540520. Its totient is φ = 1603584.

The previous prime is 6392339. The next prime is 6392359. The reversal of 6392340 is 432936.

6392340 is a `hidden beast` number, since 639 + 23 + 4 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2566404 + 3825936 = 1602^2 + 1956^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2016 + ... + 4104.

It is an arithmetic number, because the mean of its divisors is an integer number (285285).

Almost surely, 2^6392340 is an apocalyptic number.

6392340 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 6392340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10270260).

6392340 is an abundant number, since it is smaller than the sum of its proper divisors (14148180).

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

6392340 is a wasteful number, since it uses less digits than its factorization.

6392340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2121 (or 2116 counting only the distinct ones).

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

The square root of 6392340 is about 2528.3077344342. The cubic root of 6392340 is about 185.5894517514.

The spelling of 6392340 in words is "six million, three hundred ninety-two thousand, three hundred forty".