28628193 has 16 divisors (see below), whose sum is σ = 43833600. Its totient is φ = 16436880.

The previous prime is 28628177. The next prime is 28628203. The reversal of 28628193 is 39182682.

It is a happy number.

It is not a de Polignac number, because 28628193 - 2⁴ = 28628177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28628113) 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 15 ways as a sum of consecutive naturals, for example, 22203 + ... + 23456.

It is an arithmetic number, because the mean of its divisors is an integer number (2739600).

Almost surely, 2^28628193 is an apocalyptic number.

It is an amenable number.

28628193 is a deficient number, since it is larger than the sum of its proper divisors (15205407).

28628193 is a wasteful number, since it uses less digits than its factorization.

28628193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45692.

The product of its digits is 41472, while the sum is 39.

The square root of 28628193 is about 5350.5320296210. The cubic root of 28628193 is about 305.9130322293.

The spelling of 28628193 in words is "twenty-eight million, six hundred twenty-eight thousand, one hundred ninety-three".