28875571 has 8 divisors (see below), whose sum is σ = 30737664. Its totient is φ = 27031680.

The previous prime is 28875547. The next prime is 28875599. The reversal of 28875571 is 17557882.

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

It is a cyclic number.

It is not a de Polignac number, because 28875571 - 2¹³ = 28867379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28875871) 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, 1200 + ... + 7693.

It is an arithmetic number, because the mean of its divisors is an integer number (3842208).

Almost surely, 2^28875571 is an apocalyptic number.

28875571 is a deficient number, since it is larger than the sum of its proper divisors (1862093).

28875571 is a wasteful number, since it uses less digits than its factorization.

28875571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9101.

The product of its digits is 156800, while the sum is 43.

The square root of 28875571 is about 5373.5994454369. The cubic root of 28875571 is about 306.7916442136.

The spelling of 28875571 in words is "twenty-eight million, eight hundred seventy-five thousand, five hundred seventy-one".