6347043840 has 352 divisors, whose sum is σ = 21789250560. Its totient is φ = 1571291136.

The previous prime is 6347043809. The next prime is 6347043877. The reversal of 6347043840 is 483407436.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28461969 + ... + 28462191.

It is an arithmetic number, because the mean of its divisors is an integer number (61901280).

Almost surely, 2^6347043840 is an apocalyptic number.

6347043840 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 6347043840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10894625280).

6347043840 is an abundant number, since it is smaller than the sum of its proper divisors (15442206720).

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

6347043840 is a wasteful number, since it uses less digits than its factorization.

6347043840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377 (or 359 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 39.

The square root of 6347043840 is about 79668.3364957497. The cubic root of 6347043840 is about 1851.5004958232.

The spelling of 6347043840 in words is "six billion, three hundred forty-seven million, forty-three thousand, eight hundred forty".