4203728 has 10 divisors (see below), whose sum is σ = 8144754. Its totient is φ = 2101856.

The previous prime is 4203707. The next prime is 4203757. The reversal of 4203728 is 8273024.

It can be written as a sum of positive squares in only one way, i.e., 2534464 + 1669264 = 1592^2 + 1292^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4203697 and 4203706.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131351 + ... + 131382.

Almost surely, 2^4203728 is an apocalyptic number.

It is an amenable number.

4203728 is a deficient number, since it is larger than the sum of its proper divisors (3941026).

4203728 is a wasteful number, since it uses less digits than its factorization.

4203728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262741 (or 262735 counting only the distinct ones).

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

The square root of 4203728 is about 2050.2994903184. The cubic root of 4203728 is about 161.3905874853.

The spelling of 4203728 in words is "four million, two hundred three thousand, seven hundred twenty-eight".