400032304 has 40 divisors (see below), whose sum is σ = 937895328. Its totient is φ = 161356800.

The previous prime is 400032239. The next prime is 400032323. The reversal of 400032304 is 403230004.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 103147 + ... + 106954.

Almost surely, 2^400032304 is an apocalyptic number.

It is an amenable number.

400032304 is an abundant number, since it is smaller than the sum of its proper divisors (537863024).

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

400032304 is a wasteful number, since it uses less digits than its factorization.

400032304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210133 (or 210127 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 400032304 is about 20000.8075836952. The cubic root of 400032304 is about 736.8261340197.

Adding to 400032304 its reverse (403230004), we get a palindrome (803262308).

The spelling of 400032304 in words is "four hundred million, thirty-two thousand, three hundred four".