28247852 has 12 divisors (see below), whose sum is σ = 50639736. Its totient is φ = 13779360.

The previous prime is 28247833. The next prime is 28247881. The reversal of 28247852 is 25874282.

It is a happy number.

It is a super-2 number, since 2×28247852² = 1595882285227808, which contains 22 as substring.

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, 85958 + ... + 86285.

It is an arithmetic number, because the mean of its divisors is an integer number (4219978).

Almost surely, 2^28247852 is an apocalyptic number.

It is an amenable number.

28247852 is a deficient number, since it is larger than the sum of its proper divisors (22391884).

28247852 is a wasteful number, since it uses less digits than its factorization.

28247852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172288 (or 172286 counting only the distinct ones).

The product of its digits is 71680, while the sum is 38.

The square root of 28247852 is about 5314.8708356836. The cubic root of 28247852 is about 304.5522481375.

The spelling of 28247852 in words is "twenty-eight million, two hundred forty-seven thousand, eight hundred fifty-two".