28225116 has 36 divisors (see below), whose sum is σ = 71604624. Its totient is φ = 9374400.

The previous prime is 28225111. The next prime is 28225121. The reversal of 28225116 is 61152282.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28225111) and next prime (28225121).

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 28225116.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28225111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9936 + ... + 12456.

Almost surely, 2^28225116 is an apocalyptic number.

It is an amenable number.

28225116 is an abundant number, since it is smaller than the sum of its proper divisors (43379508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28225116 is a wasteful number, since it uses less digits than its factorization.

28225116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2842 (or 2837 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 28225116 is about 5312.7315008383. The cubic root of 28225116 is about 304.4705173393.

Adding to 28225116 its reverse (61152282), we get a palindrome (89377398).

The spelling of 28225116 in words is "twenty-eight million, two hundred twenty-five thousand, one hundred sixteen".