28325571 has 8 divisors (see below), whose sum is σ = 37815120. Its totient is φ = 18859872.

The previous prime is 28325567. The next prime is 28325573. The reversal of 28325571 is 17552382.

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

It is not a de Polignac number, because 28325571 - 2² = 28325567 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28325573) 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, 2976 + ... + 8093.

It is an arithmetic number, because the mean of its divisors is an integer number (4726890).

Almost surely, 2^28325571 is an apocalyptic number.

28325571 is a deficient number, since it is larger than the sum of its proper divisors (9489549).

28325571 is a wasteful number, since it uses less digits than its factorization.

28325571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11925.

The product of its digits is 16800, while the sum is 33.

The square root of 28325571 is about 5322.1772800237. The cubic root of 28325571 is about 304.8312997011.

The spelling of 28325571 in words is "twenty-eight million, three hundred twenty-five thousand, five hundred seventy-one".