6389340 has 48 divisors (see below), whose sum is σ = 18119808. Its totient is φ = 1681984.

The previous prime is 6389333. The next prime is 6389351. The reversal of 6389340 is 439836.

6389340 = 380² + 381² + ... + 419².

It is a nialpdrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4339 + ... + 5621.

It is an arithmetic number, because the mean of its divisors is an integer number (377496).

Almost surely, 2^6389340 is an apocalyptic number.

6389340 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 6389340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9059904).

6389340 is an abundant number, since it is smaller than the sum of its proper divisors (11730468).

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

6389340 is a wasteful number, since it uses less digits than its factorization.

6389340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1378 (or 1376 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 6389340 is about 2527.7143825994. The cubic root of 6389340 is about 185.5604141075.

The spelling of 6389340 in words is "six million, three hundred eighty-nine thousand, three hundred forty".