28195146 has 48 divisors (see below), whose sum is σ = 73929024. Its totient is φ = 7581312.

The previous prime is 28195133. The next prime is 28195201. The reversal of 28195146 is 64159182.

It is a super-2 number, since 2×28195146² = 1589932515922632, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28195146.

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 23 ways as a sum of consecutive naturals, for example, 4440 + ... + 8723.

It is an arithmetic number, because the mean of its divisors is an integer number (1540188).

Almost surely, 2^28195146 is an apocalyptic number.

28195146 is an abundant number, since it is smaller than the sum of its proper divisors (45733878).

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

28195146 is a wasteful number, since it uses less digits than its factorization.

28195146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13195 (or 13192 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 28195146 is about 5309.9101687317. The cubic root of 28195146 is about 304.3627148534.

The spelling of 28195146 in words is "twenty-eight million, one hundred ninety-five thousand, one hundred forty-six".