32928131 has 4 divisors (see below), whose sum is σ = 33298200. Its totient is φ = 32558064.

The previous prime is 32928089. The next prime is 32928143. The reversal of 32928131 is 13182923.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 32928131 - 2²² = 28733827 is a prime.

It is a super-2 number, since 2×32928131² = 2168523622306322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 32928094 and 32928103.

It is not an unprimeable number, because it can be changed into a prime (32927131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184901 + ... + 185078.

It is an arithmetic number, because the mean of its divisors is an integer number (8324550).

Almost surely, 2^32928131 is an apocalyptic number.

32928131 is a deficient number, since it is larger than the sum of its proper divisors (370069).

32928131 is an equidigital number, since it uses as much as digits as its factorization.

32928131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370068.

The product of its digits is 2592, while the sum is 29.

The square root of 32928131 is about 5738.3038434715. The cubic root of 32928131 is about 320.5204129642.

The spelling of 32928131 in words is "thirty-two million, nine hundred twenty-eight thousand, one hundred thirty-one".