4721872 has 20 divisors (see below), whose sum is σ = 9200800. Its totient is φ = 2347488.

The previous prime is 4721839. The next prime is 4721879. The reversal of 4721872 is 2781274.

It is an Ulam number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4721879) 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 3 ways as a sum of consecutive naturals, for example, 2443 + ... + 3925.

It is an arithmetic number, because the mean of its divisors is an integer number (460040).

Almost surely, 2^4721872 is an apocalyptic number.

It is an amenable number.

4721872 is a deficient number, since it is larger than the sum of its proper divisors (4478928).

4721872 is a wasteful number, since it uses less digits than its factorization.

4721872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1690 (or 1684 counting only the distinct ones).

The product of its digits is 6272, while the sum is 31.

The square root of 4721872 is about 2172.9868844519. The cubic root of 4721872 is about 167.7663039421.

The spelling of 4721872 in words is "four million, seven hundred twenty-one thousand, eight hundred seventy-two".