28225995 has 16 divisors (see below), whose sum is σ = 51613440. Its totient is φ = 12903264.

The previous prime is 28225993. The next prime is 28226071. The reversal of 28225995 is 59952282.

It is not a de Polignac number, because 28225995 - 2¹ = 28225993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28225993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134305 + ... + 134514.

It is an arithmetic number, because the mean of its divisors is an integer number (3225840).

Almost surely, 2^28225995 is an apocalyptic number.

28225995 is a deficient number, since it is larger than the sum of its proper divisors (23387445).

28225995 is a wasteful number, since it uses less digits than its factorization.

28225995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268834.

The product of its digits is 129600, while the sum is 42.

The square root of 28225995 is about 5312.8142260011. The cubic root of 28225995 is about 304.4736779618.

The spelling of 28225995 in words is "twenty-eight million, two hundred twenty-five thousand, nine hundred ninety-five".