28752185 has 64 divisors (see below), whose sum is σ = 47775744. Its totient is φ = 16051200.

The previous prime is 28752181. The next prime is 28752197. The reversal of 28752185 is 58125782.

It is a happy number.

It is not a de Polignac number, because 28752185 - 2² = 28752181 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28752181) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 150440 + ... + 150630.

It is an arithmetic number, because the mean of its divisors is an integer number (746496).

Almost surely, 2^28752185 is an apocalyptic number.

It is an amenable number.

28752185 is a deficient number, since it is larger than the sum of its proper divisors (19023559).

28752185 is a wasteful number, since it uses less digits than its factorization.

28752185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254.

The product of its digits is 44800, while the sum is 38.

The square root of 28752185 is about 5362.1063958113. The cubic root of 28752185 is about 306.3540443373.

The spelling of 28752185 in words is "twenty-eight million, seven hundred fifty-two thousand, one hundred eighty-five".