4247856 has 40 divisors (see below), whose sum is σ = 12194160. Its totient is φ = 1415808.

The previous prime is 4247827. The next prime is 4247863. The reversal of 4247856 is 6587424.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 4247856.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4485 + ... + 5348.

It is an arithmetic number, because the mean of its divisors is an integer number (304854).

Almost surely, 2^4247856 is an apocalyptic number.

It is an amenable number.

4247856 is an abundant number, since it is smaller than the sum of its proper divisors (7946304).

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

4247856 is a wasteful number, since it uses less digits than its factorization.

4247856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9850 (or 9838 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 4247856 is about 2061.0327508315. The cubic root of 4247856 is about 161.9533473345.

The spelling of 4247856 in words is "four million, two hundred forty-seven thousand, eight hundred fifty-six".