28965469 has 4 divisors (see below), whose sum is σ = 31193596. Its totient is φ = 26737344.

The previous prime is 28965463. The next prime is 28965491. The reversal of 28965469 is 96456982.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2442969 + 26522500 = 1563^2 + 5150^2 .

It is a cyclic number.

It is not a de Polignac number, because 28965469 - 2⁵ = 28965437 is a prime.

It is a super-2 number, since 2×28965469² = 1677996788779922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28965463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1114044 + ... + 1114069.

It is an arithmetic number, because the mean of its divisors is an integer number (7798399).

Almost surely, 2^28965469 is an apocalyptic number.

It is an amenable number.

28965469 is a deficient number, since it is larger than the sum of its proper divisors (2228127).

28965469 is a wasteful number, since it uses less digits than its factorization.

28965469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2228126.

The product of its digits is 933120, while the sum is 49.

The square root of 28965469 is about 5381.9577293026. The cubic root of 28965469 is about 307.1096914097.

The spelling of 28965469 in words is "twenty-eight million, nine hundred sixty-five thousand, four hundred sixty-nine".