28299195 has 24 divisors (see below), whose sum is σ = 49183056. Its totient is φ = 15052608.

The previous prime is 28299179. The next prime is 28299197. The reversal of 28299195 is 59199282.

It is not a de Polignac number, because 28299195 - 2⁴ = 28299179 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 28299195.

It is not an unprimeable number, because it can be changed into a prime (28299197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24777 + ... + 25893.

It is an arithmetic number, because the mean of its divisors is an integer number (2049294).

Almost surely, 2^28299195 is an apocalyptic number.

28299195 is a deficient number, since it is larger than the sum of its proper divisors (20883861).

28299195 is a wasteful number, since it uses less digits than its factorization.

28299195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1691 (or 1688 counting only the distinct ones).

The product of its digits is 116640, while the sum is 45.

The square root of 28299195 is about 5319.6987696673. The cubic root of 28299195 is about 304.7366534506.

The spelling of 28299195 in words is "twenty-eight million, two hundred ninety-nine thousand, one hundred ninety-five".