28775159 has 16 divisors (see below), whose sum is σ = 33988416. Its totient is φ = 23846400.

The previous prime is 28775141. The next prime is 28775171. The reversal of 28775159 is 95157782.

It is a cyclic number.

It is not a de Polignac number, because 28775159 - 2⁸ = 28774903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28775129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62189 + ... + 62649.

It is an arithmetic number, because the mean of its divisors is an integer number (2124276).

Almost surely, 2^28775159 is an apocalyptic number.

28775159 is a deficient number, since it is larger than the sum of its proper divisors (5213257).

28775159 is a wasteful number, since it uses less digits than its factorization.

28775159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746.

The product of its digits is 176400, while the sum is 44.

The square root of 28775159 is about 5364.2482231903. The cubic root of 28775159 is about 306.4356184747.

The spelling of 28775159 in words is "twenty-eight million, seven hundred seventy-five thousand, one hundred fifty-nine".