400032030 has 16 divisors (see below), whose sum is σ = 960076944. Its totient is φ = 106675200.

The previous prime is 400032007. The next prime is 400032037. The reversal of 400032030 is 30230004.

It is a junction number, because it is equal to n+sod(n) for n = 400031997 and 400032015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400032037) 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 7 ways as a sum of consecutive naturals, for example, 6667171 + ... + 6667230.

It is an arithmetic number, because the mean of its divisors is an integer number (60004809).

Almost surely, 2^400032030 is an apocalyptic number.

400032030 is an abundant number, since it is smaller than the sum of its proper divisors (560044914).

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

400032030 is a wasteful number, since it uses less digits than its factorization.

400032030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13334411.

The product of its (nonzero) digits is 72, while the sum is 12.

The square root of 400032030 is about 20000.8007339706. The cubic root of 400032030 is about 736.8259657913.

Adding to 400032030 its reverse (30230004), we get a palindrome (430262034).

The spelling of 400032030 in words is "four hundred million, thirty-two thousand, thirty".