403405232 has 80 divisors (see below), whose sum is σ = 839946240. Its totient is φ = 187353600.

The previous prime is 403405229. The next prime is 403405237. The reversal of 403405232 is 232504304.

It is a junction number, because it is equal to n+sod(n) for n = 403405198 and 403405207.

It is not an unprimeable number, because it can be changed into a prime (403405237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1687769 + ... + 1688007.

It is an arithmetic number, because the mean of its divisors is an integer number (10499328).

Almost surely, 2^403405232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 403405232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (419973120).

403405232 is an abundant number, since it is smaller than the sum of its proper divisors (436541008).

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

403405232 is a wasteful number, since it uses less digits than its factorization.

403405232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402 (or 396 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 403405232 is about 20084.9503857988. The cubic root of 403405232 is about 738.8912248199.

Adding to 403405232 its reverse (232504304), we get a palindrome (635909536).

The spelling of 403405232 in words is "four hundred three million, four hundred five thousand, two hundred thirty-two".