403040128 has 16 divisors (see below), whose sum is σ = 802931760. Its totient is φ = 201520000.

The previous prime is 403040119. The next prime is 403040129. The reversal of 403040128 is 821040304.

It is a tau number, because it is divible by the number of its divisors (16).

It is a junction number, because it is equal to n+sod(n) for n = 403040099 and 403040108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403040129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1574248 + ... + 1574503.

It is an arithmetic number, because the mean of its divisors is an integer number (50183235).

Almost surely, 2^403040128 is an apocalyptic number.

It is an amenable number.

403040128 is a deficient number, since it is larger than the sum of its proper divisors (399891632).

403040128 is an equidigital number, since it uses as much as digits as its factorization.

403040128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3148765 (or 3148753 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 403040128 is about 20075.8593340360. The cubic root of 403040128 is about 738.6682450901.

The spelling of 403040128 in words is "four hundred three million, forty thousand, one hundred twenty-eight".