28192288 has 12 divisors (see below), whose sum is σ = 55503630. Its totient is φ = 14096128.

The previous prime is 28192279. The next prime is 28192303. The reversal of 28192288 is 88229182.

It can be written as a sum of positive squares in only one way, i.e., 28174864 + 17424 = 5308^2 + 132^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28192288.

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, 440473 + ... + 440536.

Almost surely, 2^28192288 is an apocalyptic number.

It is an amenable number.

28192288 is a deficient number, since it is larger than the sum of its proper divisors (27311342).

28192288 is an equidigital number, since it uses as much as digits as its factorization.

28192288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881019 (or 881011 counting only the distinct ones).

The product of its digits is 36864, while the sum is 40.

The square root of 28192288 is about 5309.6410424811. The cubic root of 28192288 is about 304.3524306006.

The spelling of 28192288 in words is "twenty-eight million, one hundred ninety-two thousand, two hundred eighty-eight".