28258835 has 32 divisors (see below), whose sum is σ = 39191040. Its totient is φ = 19360000.

The previous prime is 28258831. The next prime is 28258843. The reversal of 28258835 is 53885282.

It is not a de Polignac number, because 28258835 - 2² = 28258831 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28258792 and 28258801.

It is not an unprimeable number, because it can be changed into a prime (28258831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 112460 + ... + 112710.

It is an arithmetic number, because the mean of its divisors is an integer number (1224720).

Almost surely, 2^28258835 is an apocalyptic number.

28258835 is a deficient number, since it is larger than the sum of its proper divisors (10932205).

28258835 is a wasteful number, since it uses less digits than its factorization.

28258835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379.

The product of its digits is 153600, while the sum is 41.

The square root of 28258835 is about 5315.9039682823. The cubic root of 28258835 is about 304.5917138395.

The spelling of 28258835 in words is "twenty-eight million, two hundred fifty-eight thousand, eight hundred thirty-five".