32640043 has 8 divisors (see below), whose sum is σ = 35089920. Its totient is φ = 30263400.

The previous prime is 32640011. The next prime is 32640071. The reversal of 32640043 is 34004623.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 32640043 - 2⁵ = 32640011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 32639996 and 32640023.

It is not an unprimeable number, because it can be changed into a prime (32640343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17383 + ... + 19168.

It is an arithmetic number, because the mean of its divisors is an integer number (4386240).

Almost surely, 2^32640043 is an apocalyptic number.

32640043 is a deficient number, since it is larger than the sum of its proper divisors (2449877).

32640043 is a wasteful number, since it uses less digits than its factorization.

32640043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36617.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 32640043 is about 5713.1465060858. The cubic root of 32640043 is about 319.5829299578.

Adding to 32640043 its reverse (34004623), we get a palindrome (66644666).

The spelling of 32640043 in words is "thirty-two million, six hundred forty thousand, forty-three".