28144192 has 14 divisors (see below), whose sum is σ = 55848758. Its totient is φ = 14072064.

The previous prime is 28144189. The next prime is 28144213. The reversal of 28144192 is 29144182.

It can be written as a sum of positive squares in only one way, i.e., 25240576 + 2903616 = 5024^2 + 1704^2 .

It is a super-3 number, since 3×28144192³ (a number of 23 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219813 + ... + 219940.

It is an arithmetic number, because the mean of its divisors is an integer number (3989197).

Almost surely, 2^28144192 is an apocalyptic number.

It is an amenable number.

28144192 is a deficient number, since it is larger than the sum of its proper divisors (27704566).

28144192 is an equidigital number, since it uses as much as digits as its factorization.

28144192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439765 (or 439755 counting only the distinct ones).

The product of its digits is 4608, while the sum is 31.

The square root of 28144192 is about 5305.1099894347. The cubic root of 28144192 is about 304.1792571590.

The spelling of 28144192 in words is "twenty-eight million, one hundred forty-four thousand, one hundred ninety-two".