28359297 has 6 divisors (see below), whose sum is σ = 40963442. Its totient is φ = 18906192.

The previous prime is 28359277. The next prime is 28359301. The reversal of 28359297 is 79295382.

28359297 is a `hidden beast` number, since 2 + 8 + 359 + 297 = 666.

It can be written as a sum of positive squares in only one way, i.e., 24295041 + 4064256 = 4929^2 + 2016^2 .

It is not a de Polignac number, because 28359297 - 2⁸ = 28359041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28359217) 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 5 ways as a sum of consecutive naturals, for example, 1575508 + ... + 1575525.

Almost surely, 2^28359297 is an apocalyptic number.

It is an amenable number.

28359297 is a deficient number, since it is larger than the sum of its proper divisors (12604145).

28359297 is a wasteful number, since it uses less digits than its factorization.

28359297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3151039 (or 3151036 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 28359297 is about 5325.3447775707. The cubic root of 28359297 is about 304.9522347488.

The spelling of 28359297 in words is "twenty-eight million, three hundred fifty-nine thousand, two hundred ninety-seven".