28432671 has 8 divisors (see below), whose sum is σ = 38013360. Its totient is φ = 18903552.

The previous prime is 28432661. The next prime is 28432699. The reversal of 28432671 is 17623482.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28432671 - 2¹⁰ = 28431647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28432601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11586 + ... + 13823.

It is an arithmetic number, because the mean of its divisors is an integer number (4751670).

Almost surely, 2^28432671 is an apocalyptic number.

28432671 is a deficient number, since it is larger than the sum of its proper divisors (9580689).

28432671 is a wasteful number, since it uses less digits than its factorization.

28432671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25785.

The product of its digits is 16128, while the sum is 33.

The square root of 28432671 is about 5332.2294586786. The cubic root of 28432671 is about 305.2150091931.

The spelling of 28432671 in words is "twenty-eight million, four hundred thirty-two thousand, six hundred seventy-one".