400032328 has 16 divisors (see below), whose sum is σ = 755537580. Its totient is φ = 198555648.

The previous prime is 400032323. The next prime is 400032329. The reversal of 400032328 is 823230004.

It can be written as a sum of positive squares in 2 ways, for example, as 392753124 + 7279204 = 19818^2 + 2698^2 .

It is a junction number, because it is equal to n+sod(n) for n = 400032299 and 400032308.

It is not an unprimeable number, because it can be changed into a prime (400032323) 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 in 3 ways as a sum of consecutive naturals, for example, 181401 + ... + 183592.

Almost surely, 2^400032328 is an apocalyptic number.

It is an amenable number.

400032328 is a deficient number, since it is larger than the sum of its proper divisors (355505252).

400032328 is a wasteful number, since it uses less digits than its factorization.

400032328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365136 (or 365132 counting only the distinct ones).

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

The square root of 400032328 is about 20000.8081836710. The cubic root of 400032328 is about 736.8261487551.

The spelling of 400032328 in words is "four hundred million, thirty-two thousand, three hundred twenty-eight".