32728045 has 16 divisors (see below), whose sum is σ = 45980928. Its totient is φ = 21893760.

The previous prime is 32728039. The next prime is 32728049. The reversal of 32728045 is 54082723.

It is not a de Polignac number, because 32728045 - 2²¹ = 30630893 is a prime.

It is a super-2 number, since 2×32728045² = 2142249859044050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 32727998 and 32728016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32728049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9969 + ... + 12838.

It is an arithmetic number, because the mean of its divisors is an integer number (2873808).

Almost surely, 2^32728045 is an apocalyptic number.

32728045 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

32728045 is a deficient number, since it is larger than the sum of its proper divisors (13252883).

32728045 is a wasteful number, since it uses less digits than its factorization.

32728045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22860.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 32728045 is about 5720.8430322812. The cubic root of 32728045 is about 319.8698852524.

The spelling of 32728045 in words is "thirty-two million, seven hundred twenty-eight thousand, forty-five".