403028128 has 24 divisors (see below), whose sum is σ = 794308788. Its totient is φ = 201298944.

The previous prime is 403028099. The next prime is 403028147. The reversal of 403028128 is 821820304.

It can be written as a sum of positive squares in 2 ways, for example, as 282643344 + 120384784 = 16812^2 + 10972^2 .

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 403028096 and 403028105.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26200 + ... + 38632.

Almost surely, 2^403028128 is an apocalyptic number.

It is an amenable number.

403028128 is a deficient number, since it is larger than the sum of its proper divisors (391280660).

403028128 is a wasteful number, since it uses less digits than its factorization.

403028128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13456 (or 13448 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 403028128 is about 20075.5604654017. The cubic root of 403028128 is about 738.6609140526.

The spelling of 403028128 in words is "four hundred three million, twenty-eight thousand, one hundred twenty-eight".