28968469 has 4 divisors (see below), whose sum is σ = 29459520. Its totient is φ = 28477420.

The previous prime is 28968451. The next prime is 28968487. The reversal of 28968469 is 96486982.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 96486982 = 2 ⋅48243491.

It is an interprime number because it is at equal distance from previous prime (28968451) and next prime (28968487).

It is a cyclic number.

It is not a de Polignac number, because 28968469 - 2⁵ = 28968437 is a prime.

It is a super-2 number, since 2×28968469² = 1678344392407922, 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 (28968409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245437 + ... + 245554.

It is an arithmetic number, because the mean of its divisors is an integer number (7364880).

Almost surely, 2^28968469 is an apocalyptic number.

It is an amenable number.

28968469 is a deficient number, since it is larger than the sum of its proper divisors (491051).

28968469 is an equidigital number, since it uses as much as digits as its factorization.

28968469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491050.

The product of its digits is 1492992, while the sum is 52.

The square root of 28968469 is about 5382.2364310758. The cubic root of 28968469 is about 307.1202936578.

The spelling of 28968469 in words is "twenty-eight million, nine hundred sixty-eight thousand, four hundred sixty-nine".