28572671 has 4 divisors (see below), whose sum is σ = 29111832. Its totient is φ = 28033512.

The previous prime is 28572623. The next prime is 28572679. The reversal of 28572671 is 17627582.

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 28572671 - 2¹⁴ = 28556287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28572679) 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, 269501 + ... + 269606.

It is an arithmetic number, because the mean of its divisors is an integer number (7277958).

Almost surely, 2^28572671 is an apocalyptic number.

28572671 is a deficient number, since it is larger than the sum of its proper divisors (539161).

28572671 is an equidigital number, since it uses as much as digits as its factorization.

28572671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539160.

The product of its digits is 47040, while the sum is 38.

The square root of 28572671 is about 5345.3410555361. The cubic root of 28572671 is about 305.7151399454.

The spelling of 28572671 in words is "twenty-eight million, five hundred seventy-two thousand, six hundred seventy-one".