28195522 has 8 divisors (see below), whose sum is σ = 42414156. Its totient is φ = 14057472.

The previous prime is 28195507. The next prime is 28195561. The reversal of 28195522 is 22559182.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 27573001 + 622521 = 5251^2 + 789^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 19263 + ... + 20674.

Almost surely, 2^28195522 is an apocalyptic number.

28195522 is a deficient number, since it is larger than the sum of its proper divisors (14218634).

28195522 is a wasteful number, since it uses less digits than its factorization.

28195522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40292.

The product of its digits is 14400, while the sum is 34.

The square root of 28195522 is about 5309.9455741090. The cubic root of 28195522 is about 304.3640678035.

The spelling of 28195522 in words is "twenty-eight million, one hundred ninety-five thousand, five hundred twenty-two".