28501058 has 8 divisors (see below), whose sum is σ = 42999228. Its totient is φ = 14167984.

The previous prime is 28501051. The next prime is 28501087. The reversal of 28501058 is 85010582.

It can be written as a sum of positive squares in 2 ways, for example, as 18722929 + 9778129 = 4327^2 + 3127^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 28501058.

It is not an unprimeable number, because it can be changed into a prime (28501051) 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 3 ways as a sum of consecutive naturals, for example, 40841 + ... + 41532.

Almost surely, 2^28501058 is an apocalyptic number.

28501058 is a deficient number, since it is larger than the sum of its proper divisors (14498170).

28501058 is a wasteful number, since it uses less digits than its factorization.

28501058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82548.

The product of its (nonzero) digits is 3200, while the sum is 29.

The square root of 28501058 is about 5338.6382158749. The cubic root of 28501058 is about 305.4595169592.

The spelling of 28501058 in words is "twenty-eight million, five hundred one thousand, fifty-eight".