4435728 has 80 divisors (see below), whose sum is σ = 12951552. Its totient is φ = 1296000.

The previous prime is 4435723. The next prime is 4435733. The reversal of 4435728 is 8275344.

4435728 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (4435723) and next prime (4435733).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (4435723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16233 + ... + 16503.

Almost surely, 2^4435728 is an apocalyptic number.

4435728 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 4435728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6475776).

4435728 is an abundant number, since it is smaller than the sum of its proper divisors (8515824).

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

4435728 is a wasteful number, since it uses less digits than its factorization.

4435728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324 (or 318 counting only the distinct ones).

The product of its digits is 26880, while the sum is 33.

The square root of 4435728 is about 2106.1168058776. The cubic root of 4435728 is about 164.3065849441.

The spelling of 4435728 in words is "four million, four hundred thirty-five thousand, seven hundred twenty-eight".