28395369 has 6 divisors (see below), whose sum is σ = 41015546. Its totient is φ = 18930240.

The previous prime is 28395347. The next prime is 28395373. The reversal of 28395369 is 96359382.

28395369 is a `hidden beast` number, since 283 + 9 + 5 + 369 = 666.

It can be written as a sum of positive squares in only one way, i.e., 20358144 + 8037225 = 4512^2 + 2835^2 .

It is not a de Polignac number, because 28395369 - 2⁸ = 28395113 is a prime.

It is a super-2 number, since 2×28395369² = 1612593961292322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28395469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1577512 + ... + 1577529.

Almost surely, 2^28395369 is an apocalyptic number.

It is an amenable number.

28395369 is a deficient number, since it is larger than the sum of its proper divisors (12620177).

28395369 is a wasteful number, since it uses less digits than its factorization.

28395369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3155047 (or 3155044 counting only the distinct ones).

The product of its digits is 349920, while the sum is 45.

The square root of 28395369 is about 5328.7305242431. The cubic root of 28395369 is about 305.0814760382.

The spelling of 28395369 in words is "twenty-eight million, three hundred ninety-five thousand, three hundred sixty-nine".