28342269 has 12 divisors (see below), whose sum is σ = 41810496. Its totient is φ = 18492552.

The previous prime is 28342241. The next prime is 28342271. The reversal of 28342269 is 96224382.

It is not a de Polignac number, because 28342269 - 2¹² = 28338173 is a prime.

It is a super-2 number, since 2×28342269² = 1606568424136722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28342229) 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 11 ways as a sum of consecutive naturals, for example, 33079 + ... + 33924.

It is an arithmetic number, because the mean of its divisors is an integer number (3484208).

Almost surely, 2^28342269 is an apocalyptic number.

It is an amenable number.

28342269 is a deficient number, since it is larger than the sum of its proper divisors (13468227).

28342269 is a wasteful number, since it uses less digits than its factorization.

28342269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67056 (or 67053 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 28342269 is about 5323.7457677842. The cubic root of 28342269 is about 304.8911875573.

It can be divided in two parts, 2834 and 2269, that multiplied together give a palindrome (6430346).

The spelling of 28342269 in words is "twenty-eight million, three hundred forty-two thousand, two hundred sixty-nine".