28542175 has 12 divisors (see below), whose sum is σ = 35477640. Its totient is φ = 22778720.

The previous prime is 28542139. The next prime is 28542179. The reversal of 28542175 is 57124582.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-28542175 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28542175.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28542179) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11604 + ... + 13846.

It is an arithmetic number, because the mean of its divisors is an integer number (2956470).

Almost surely, 2^28542175 is an apocalyptic number.

28542175 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28542175 is a deficient number, since it is larger than the sum of its proper divisors (6935465).

28542175 is a wasteful number, since it uses less digits than its factorization.

28542175 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2762 (or 2757 counting only the distinct ones).

The product of its digits is 22400, while the sum is 34.

The square root of 28542175 is about 5342.4877164108. The cubic root of 28542175 is about 305.6063365861.

The spelling of 28542175 in words is "twenty-eight million, five hundred forty-two thousand, one hundred seventy-five".