400530304 has 32 divisors (see below), whose sum is σ = 799682040. Its totient is φ = 199825920.

The previous prime is 400530269. The next prime is 400530311. The reversal of 400530304 is 403035004.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59662 + ... + 66034.

Almost surely, 2^400530304 is an apocalyptic number.

It is an amenable number.

400530304 is a deficient number, since it is larger than the sum of its proper divisors (399151736).

400530304 is an equidigital number, since it uses as much as digits as its factorization.

400530304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6878 (or 6866 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 400530304 is about 20013.2532088114. The cubic root of 400530304 is about 737.1317653806.

Adding to 400530304 its reverse (403035004), we get a palindrome (803565308).

The spelling of 400530304 in words is "four hundred million, five hundred thirty thousand, three hundred four".