4023728 has 10 divisors (see below), whose sum is σ = 7796004. Its totient is φ = 2011856.

The previous prime is 4023727. The next prime is 4023731. The reversal of 4023728 is 8273204.

It is a junction number, because it is equal to n+sod(n) for n = 4023697 and 4023706.

It is not an unprimeable number, because it can be changed into a prime (4023727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125726 + ... + 125757.

Almost surely, 2^4023728 is an apocalyptic number.

It is an amenable number.

4023728 is a deficient number, since it is larger than the sum of its proper divisors (3772276).

4023728 is a wasteful number, since it uses less digits than its factorization.

4023728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251491 (or 251485 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 4023728 is about 2005.9232288400. The cubic root of 4023728 is about 159.0533686860.

The spelling of 4023728 in words is "four million, twenty-three thousand, seven hundred twenty-eight".