4721856 has 28 divisors (see below), whose sum is σ = 12493752. Its totient is φ = 1573888.

The previous prime is 4721839. The next prime is 4721879. The reversal of 4721856 is 6581274.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12105 + ... + 12488.

Almost surely, 2^4721856 is an apocalyptic number.

It is an amenable number.

4721856 is an abundant number, since it is smaller than the sum of its proper divisors (7771896).

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

4721856 is a wasteful number, since it uses less digits than its factorization.

4721856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24608 (or 24598 counting only the distinct ones).

The product of its digits is 13440, while the sum is 33.

The square root of 4721856 is about 2172.9832028803. The cubic root of 4721856 is about 167.7661144506.

It can be divided in two parts, 47218 and 56, that added together give a palindrome (47274).

The spelling of 4721856 in words is "four million, seven hundred twenty-one thousand, eight hundred fifty-six".