28752585 has 8 divisors (see below), whose sum is σ = 46004160. Its totient is φ = 15334704.

The previous prime is 28752569. The next prime is 28752587. The reversal of 28752585 is 58525782.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28752585 - 2⁴ = 28752569 is a prime.

It is a super-2 number, since 2×28752585² = 1653422288364450, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28752587) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 958405 + ... + 958434.

It is an arithmetic number, because the mean of its divisors is an integer number (5750520).

Almost surely, 2^28752585 is an apocalyptic number.

It is an amenable number.

28752585 is a deficient number, since it is larger than the sum of its proper divisors (17251575).

28752585 is a wasteful number, since it uses less digits than its factorization.

28752585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1916847.

The product of its digits is 224000, while the sum is 42.

The square root of 28752585 is about 5362.1436944565. The cubic root of 28752585 is about 306.3554649952.

It can be divided in two parts, 2875 and 2585, that added together give a triangular number (5460 = T₁₀₄).

The spelling of 28752585 in words is "twenty-eight million, seven hundred fifty-two thousand, five hundred eighty-five".