28194955 has 16 divisors (see below), whose sum is σ = 35748000. Its totient is φ = 21288960.

The previous prime is 28194953. The next prime is 28194961. The reversal of 28194955 is 55949182.

It is not a de Polignac number, because 28194955 - 2¹ = 28194953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28194953) 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, 42325 + ... + 42985.

It is an arithmetic number, because the mean of its divisors is an integer number (2234250).

Almost surely, 2^28194955 is an apocalyptic number.

28194955 is a deficient number, since it is larger than the sum of its proper divisors (7553045).

28194955 is a wasteful number, since it uses less digits than its factorization.

28194955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1134.

The product of its digits is 129600, while the sum is 43.

The square root of 28194955 is about 5309.8921834629. The cubic root of 28194955 is about 304.3620275790.

The spelling of 28194955 in words is "twenty-eight million, one hundred ninety-four thousand, nine hundred fifty-five".