4621728 has 48 divisors (see below), whose sum is σ = 12531456. Its totient is φ = 1489920.

The previous prime is 4621723. The next prime is 4621777. The reversal of 4621728 is 8271264.

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

It is a junction number, because it is equal to n+sod(n) for n = 4621695 and 4621704.

It is not an unprimeable number, because it can be changed into a prime (4621723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2200 + ... + 3752.

It is an arithmetic number, because the mean of its divisors is an integer number (261072).

Almost surely, 2^4621728 is an apocalyptic number.

4621728 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 4621728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6265728).

4621728 is an abundant number, since it is smaller than the sum of its proper divisors (7909728).

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

4621728 is a wasteful number, since it uses less digits than its factorization.

4621728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1597 (or 1589 counting only the distinct ones).

The product of its digits is 5376, while the sum is 30.

The square root of 4621728 is about 2149.8204576197. The cubic root of 4621728 is about 166.5717931154.

The spelling of 4621728 in words is "four million, six hundred twenty-one thousand, seven hundred twenty-eight".