8640032 has 12 divisors (see below), whose sum is σ = 17010126. Its totient is φ = 4320000.

The previous prime is 8640017. The next prime is 8640059. The reversal of 8640032 is 2300468.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 7376656 + 1263376 = 2716^2 + 1124^2 .

It is a super-2 number, since 2×8640032² = 149300305922048, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134969 + ... + 135032.

Almost surely, 2^8640032 is an apocalyptic number.

It is an amenable number.

8640032 is a deficient number, since it is larger than the sum of its proper divisors (8370094).

8640032 is a wasteful number, since it uses less digits than its factorization.

8640032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270011 (or 270003 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 8640032 is about 2939.3931346453. The cubic root of 8640032 is about 205.1973669307.

The spelling of 8640032 in words is "eight million, six hundred forty thousand, thirty-two".