4721568 has 48 divisors (see below), whose sum is σ = 12519360. Its totient is φ = 1558016.

The previous prime is 4721531. The next prime is 4721569. The reversal of 4721568 is 8651274.

It is a tau number, because it is divible by the number of its divisors (48).

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (4721569) by changing a digit.

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, 12973 + ... + 13331.

It is an arithmetic number, because the mean of its divisors is an integer number (260820).

Almost surely, 2^4721568 is an apocalyptic number.

4721568 is a gapful number since it is divisible by the number (48) 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 4721568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6259680).

4721568 is an abundant number, since it is smaller than the sum of its proper divisors (7797792).

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

4721568 is a wasteful number, since it uses less digits than its factorization.

4721568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509 (or 501 counting only the distinct ones).

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

The square root of 4721568 is about 2172.9169335251. The cubic root of 4721568 is about 167.7627035303.

The spelling of 4721568 in words is "four million, seven hundred twenty-one thousand, five hundred sixty-eight".