4211728 has 30 divisors (see below), whose sum is σ = 8478314. Its totient is φ = 2026752.

The previous prime is 4211723. The next prime is 4211729. The reversal of 4211728 is 8271124.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 17424 + 4194304 = 132^2 + 2048^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4211723) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13300 + ... + 13612.

Almost surely, 2^4211728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4211728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4239157).

4211728 is an abundant number, since it is smaller than the sum of its proper divisors (4266586).

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

4211728 is a wasteful number, since it uses less digits than its factorization.

4211728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379 (or 344 counting only the distinct ones).

The product of its digits is 896, while the sum is 25.

The square root of 4211728 is about 2052.2494975027. The cubic root of 4211728 is about 161.4929019492.

The spelling of 4211728 in words is "four million, two hundred eleven thousand, seven hundred twenty-eight".