32768021 has 24 divisors (see below), whose sum is σ = 39938976. Its totient is φ = 26490240.

The previous prime is 32768011. The next prime is 32768033. The reversal of 32768021 is 12086723.

It is a happy number.

It is not a de Polignac number, because 32768021 - 2⁶ = 32767957 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32768011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 448841 + ... + 448913.

It is an arithmetic number, because the mean of its divisors is an integer number (1664124).

Almost surely, 2^32768021 is an apocalyptic number.

It is an amenable number.

32768021 is a deficient number, since it is larger than the sum of its proper divisors (7170955).

32768021 is a wasteful number, since it uses less digits than its factorization.

32768021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213 (or 140 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 32768021 is about 5724.3358566737. The cubic root of 32768021 is about 320.0000683594. Note that the first 4 decimals are identical.

The spelling of 32768021 in words is "thirty-two million, seven hundred sixty-eight thousand, twenty-one".