4000320032 has 12 divisors (see below), whose sum is σ = 7875630126. Its totient is φ = 2000160000.

The previous prime is 4000320019. The next prime is 4000320043. The reversal of 4000320032 is 2300230004.

It can be written as a sum of positive squares in only one way, i.e., 3600480016 + 399840016 = 60004^2 + 19996^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4000319989 and 4000320016.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62504969 + ... + 62505032.

Almost surely, 2^4000320032 is an apocalyptic number.

It is an amenable number.

4000320032 is a deficient number, since it is larger than the sum of its proper divisors (3875310094).

4000320032 is a wasteful number, since it uses less digits than its factorization.

4000320032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125010011 (or 125010003 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 14.

The square root of 4000320032 is about 63248.0832278734. The cubic root of 4000320032 is about 1587.4433857670.

Adding to 4000320032 its reverse (2300230004), we get a palindrome (6300550036).

The spelling of 4000320032 in words is "four billion, three hundred twenty thousand, thirty-two".