28849569 has 8 divisors (see below), whose sum is σ = 43961280. Its totient is φ = 16485456.

The previous prime is 28849549. The next prime is 28849571. The reversal of 28849569 is 96594882.

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

It is not a de Polignac number, because 28849569 - 2⁵ = 28849537 is a prime.

It is a super-2 number, since 2×28849569² = 1664595262971522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28849549) 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, 686874 + ... + 686915.

It is an arithmetic number, because the mean of its divisors is an integer number (5495160).

Almost surely, 2^28849569 is an apocalyptic number.

It is an amenable number.

28849569 is a deficient number, since it is larger than the sum of its proper divisors (15111711).

28849569 is a wasteful number, since it uses less digits than its factorization.

28849569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1373799.

The product of its digits is 1244160, while the sum is 51.

The square root of 28849569 is about 5371.1794794067. The cubic root of 28849569 is about 306.6995295333.

The spelling of 28849569 in words is "twenty-eight million, eight hundred forty-nine thousand, five hundred sixty-nine".