28587273 has 32 divisors (see below), whose sum is σ = 46015872. Its totient is φ = 15552000.

The previous prime is 28587269. The next prime is 28587283. The reversal of 28587273 is 37278582.

It is not a de Polignac number, because 28587273 - 2² = 28587269 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28587203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14973 + ... + 16773.

It is an arithmetic number, because the mean of its divisors is an integer number (1437996).

Almost surely, 2^28587273 is an apocalyptic number.

It is an amenable number.

28587273 is a deficient number, since it is larger than the sum of its proper divisors (17428599).

28587273 is a wasteful number, since it uses less digits than its factorization.

28587273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1865.

The product of its digits is 188160, while the sum is 42.

The square root of 28587273 is about 5346.7067434076. The cubic root of 28587273 is about 305.7672094239.

The spelling of 28587273 in words is "twenty-eight million, five hundred eighty-seven thousand, two hundred seventy-three".