28983469 has 4 divisors (see below), whose sum is σ = 29766844. Its totient is φ = 28200096.

The previous prime is 28983467. The next prime is 28983491. The reversal of 28983469 is 96438982.

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 15697444 + 13286025 = 3962^2 + 3645^2 .

It is a cyclic number.

It is not a de Polignac number, because 28983469 - 2¹ = 28983467 is a prime.

It is a super-2 number, since 2×28983469² = 1680082950547922, 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 (28983467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 391632 + ... + 391705.

It is an arithmetic number, because the mean of its divisors is an integer number (7441711).

Almost surely, 2^28983469 is an apocalyptic number.

It is an amenable number.

28983469 is a deficient number, since it is larger than the sum of its proper divisors (783375).

28983469 is an equidigital number, since it uses as much as digits as its factorization.

28983469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783374.

The product of its digits is 746496, while the sum is 49.

The square root of 28983469 is about 5383.6297235230. The cubic root of 28983469 is about 307.1732939216.

The spelling of 28983469 in words is "twenty-eight million, nine hundred eighty-three thousand, four hundred sixty-nine".