4213728 has 48 divisors (see below), whose sum is σ = 12292560. Its totient is φ = 1404288.

The previous prime is 4213717. The next prime is 4213747. The reversal of 4213728 is 8273124.

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

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1575 + ... + 3302.

It is an arithmetic number, because the mean of its divisors is an integer number (256095).

Almost surely, 2^4213728 is an apocalyptic number.

4213728 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

4213728 is an abundant number, since it is smaller than the sum of its proper divisors (8078832).

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

4213728 is a wasteful number, since it uses less digits than its factorization.

4213728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4896 (or 4882 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 4213728 is about 2052.7367098583. The cubic root of 4213728 is about 161.5184603180.

The spelling of 4213728 in words is "four million, two hundred thirteen thousand, seven hundred twenty-eight".