24428569 has 6 divisors (see below), whose sum is σ = 26851370. Its totient is φ = 22207680.

The previous prime is 24428563. The next prime is 24428587. The reversal of 24428569 is 96582442.

It can be written as a sum of positive squares in only one way, i.e., 22686169 + 1742400 = 4763^2 + 1320^2 .

It is not a de Polignac number, because 24428569 - 2¹⁹ = 23904281 is a prime.

It is a super-2 number, since 2×24428569² = 1193509966775522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (24428563) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 100824 + ... + 101065.

Almost surely, 2^24428569 is an apocalyptic number.

It is an amenable number.

24428569 is a deficient number, since it is larger than the sum of its proper divisors (2422801).

24428569 is a wasteful number, since it uses less digits than its factorization.

24428569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201911 (or 201900 counting only the distinct ones).

The product of its digits is 138240, while the sum is 40.

The square root of 24428569 is about 4942.5265806063. The cubic root of 24428569 is about 290.1567483955.

It can be divided in two parts, 2442 and 8569, that added together give a palindrome (11011).

The spelling of 24428569 in words is "twenty-four million, four hundred twenty-eight thousand, five hundred sixty-nine".