403040380 has 12 divisors (see below), whose sum is σ = 846384840. Its totient is φ = 161216144.

The previous prime is 403040357. The next prime is 403040389. The reversal of 403040380 is 83040304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403040389) 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 3 ways as a sum of consecutive naturals, for example, 10075990 + ... + 10076029.

It is an arithmetic number, because the mean of its divisors is an integer number (70532070).

Almost surely, 2^403040380 is an apocalyptic number.

It is an amenable number.

403040380 is an abundant number, since it is smaller than the sum of its proper divisors (443344460).

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

403040380 is a wasteful number, since it uses less digits than its factorization.

403040380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20152028 (or 20152026 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 403040380 is about 20075.8656102296. The cubic root of 403040380 is about 738.6683990403.

Adding to 403040380 its reverse (83040304), we get a palindrome (486080684).

The spelling of 403040380 in words is "four hundred three million, forty thousand, three hundred eighty".