4051728 has 80 divisors (see below), whose sum is σ = 11874240. Its totient is φ = 1322496.

The previous prime is 4051727. The next prime is 4051741. The reversal of 4051728 is 8271504.

4051728 is digitally balanced in base 2 and base 5, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (4051727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35800 + ... + 35912.

It is an arithmetic number, because the mean of its divisors is an integer number (148428).

Almost surely, 2^4051728 is an apocalyptic number.

4051728 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 4051728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5937120).

4051728 is an abundant number, since it is smaller than the sum of its proper divisors (7822512).

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

4051728 is a wasteful number, since it uses less digits than its factorization.

4051728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213 (or 201 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 4051728 is about 2012.8904590166. The cubic root of 4051728 is about 159.4214522034.

The spelling of 4051728 in words is "four million, fifty-one thousand, seven hundred twenty-eight".