4247840 has 48 divisors (see below), whose sum is σ = 10160640. Its totient is φ = 1678080.

The previous prime is 4247827. The next prime is 4247863. The reversal of 4247840 is 487424.

4247840 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22145 + ... + 22335.

It is an arithmetic number, because the mean of its divisors is an integer number (211680).

Almost surely, 2^4247840 is an apocalyptic number.

4247840 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 4247840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5080320).

4247840 is an abundant number, since it is smaller than the sum of its proper divisors (5912800).

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

4247840 is a wasteful number, since it uses less digits than its factorization.

4247840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345 (or 337 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 29.

The square root of 4247840 is about 2061.0288692786. The cubic root of 4247840 is about 161.9531439961.

The spelling of 4247840 in words is "four million, two hundred forty-seven thousand, eight hundred forty".