32868729 has 6 divisors (see below), whose sum is σ = 47477066. Its totient is φ = 21912480.

The previous prime is 32868709. The next prime is 32868739. The reversal of 32868729 is 92786823.

It can be written as a sum of positive squares in only one way, i.e., 19713600 + 13155129 = 4440^2 + 3627^2 .

It is not a de Polignac number, because 32868729 - 2⁵ = 32868697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32868709) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1826032 + ... + 1826049.

Almost surely, 2^32868729 is an apocalyptic number.

It is an amenable number.

32868729 is a deficient number, since it is larger than the sum of its proper divisors (14608337).

32868729 is a wasteful number, since it uses less digits than its factorization.

32868729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3652087 (or 3652084 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 32868729 is about 5733.1255873215. The cubic root of 32868729 is about 320.3275584703.

The spelling of 32868729 in words is "thirty-two million, eight hundred sixty-eight thousand, seven hundred twenty-nine".