28497159 has 6 divisors (see below), whose sum is σ = 41162576. Its totient is φ = 18998100.

The previous prime is 28497121. The next prime is 28497163. The reversal of 28497159 is 95179482.

Added to its reverse (95179482) it gives a square (123676641 = 11121²).

28497159 is a `hidden beast` number, since 2 + 8 + 497 + 159 = 666.

It is not a de Polignac number, because 28497159 - 2⁷ = 28497031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28497109) 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, 1583167 + ... + 1583184.

Almost surely, 2^28497159 is an apocalyptic number.

28497159 is a deficient number, since it is larger than the sum of its proper divisors (12665417).

28497159 is a wasteful number, since it uses less digits than its factorization.

28497159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3166357 (or 3166354 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 28497159 is about 5338.2730353552. The cubic root of 28497159 is about 305.4455871725.

Adding to 28497159 its reverse (95179482), we get a square (123676641 = 11121²).

The spelling of 28497159 in words is "twenty-eight million, four hundred ninety-seven thousand, one hundred fifty-nine".