28922569 has 8 divisors (see below), whose sum is σ = 32501952. Its totient is φ = 25536720.

The previous prime is 28922549. The next prime is 28922581. The reversal of 28922569 is 96522982.

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 28922569 - 2⁷ = 28922441 is a prime.

It is a super-2 number, since 2×28922569² = 1673029995119522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28922519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48067 + ... + 48664.

It is an arithmetic number, because the mean of its divisors is an integer number (4062744).

Almost surely, 2^28922569 is an apocalyptic number.

It is an amenable number.

28922569 is a deficient number, since it is larger than the sum of its proper divisors (3579383).

28922569 is a wasteful number, since it uses less digits than its factorization.

28922569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96767.

The product of its digits is 155520, while the sum is 43.

The square root of 28922569 is about 5377.9707139403. The cubic root of 28922569 is about 306.9579991136.

The spelling of 28922569 in words is "twenty-eight million, nine hundred twenty-two thousand, five hundred sixty-nine".