28052775 has 18 divisors (see below), whose sum is σ = 50246040. Its totient is φ = 14961360.

The previous prime is 28052767. The next prime is 28052777. The reversal of 28052775 is 57725082.

It is not a de Polignac number, because 28052775 - 2³ = 28052767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28052777) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 62115 + ... + 62564.

Almost surely, 2^28052775 is an apocalyptic number.

28052775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28052775 is a deficient number, since it is larger than the sum of its proper divisors (22193265).

28052775 is a wasteful number, since it uses less digits than its factorization.

28052775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124695 (or 124687 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 36.

The square root of 28052775 is about 5296.4870433147. The cubic root of 28052775 is about 303.8495583824.

The spelling of 28052775 in words is "twenty-eight million, fifty-two thousand, seven hundred seventy-five".