32728636 has 6 divisors (see below), whose sum is σ = 57275120. Its totient is φ = 16364316.

The previous prime is 32728627. The next prime is 32728639. The reversal of 32728636 is 63682723.

It is a super-2 number, since 2×32728636² = 2142327228840992, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 32728595 and 32728604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32728639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4091076 + ... + 4091083.

Almost surely, 2^32728636 is an apocalyptic number.

It is an amenable number.

32728636 is a deficient number, since it is larger than the sum of its proper divisors (24546484).

32728636 is a wasteful number, since it uses less digits than its factorization.

32728636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8182163 (or 8182161 counting only the distinct ones).

The product of its digits is 72576, while the sum is 37.

The square root of 32728636 is about 5720.8946852743. The cubic root of 32728636 is about 319.8718106344.

The spelling of 32728636 in words is "thirty-two million, seven hundred twenty-eight thousand, six hundred thirty-six".