4347840 has 112 divisors (see below), whose sum is σ = 15800832. Its totient is φ = 992256.

The previous prime is 4347839. The next prime is 4347841. The reversal of 4347840 is 487434.

It is an interprime number because it is at equal distance from previous prime (4347839) and next prime (4347841).

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 4347798 and 4347807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4347841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6397 + ... + 7043.

Almost surely, 2^4347840 is an apocalyptic number.

4347840 is a gapful number since it is divisible by the number (40) 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 4347840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7900416).

4347840 is an abundant number, since it is smaller than the sum of its proper divisors (11452992).

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

4347840 is a wasteful number, since it uses less digits than its factorization.

4347840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674 (or 664 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 4347840 is about 2085.1474767987. The cubic root of 4347840 is about 163.2141663981.

The spelling of 4347840 in words is "four million, three hundred forty-seven thousand, eight hundred forty".