28292168 has 16 divisors (see below), whose sum is σ = 54877500. Its totient is φ = 13658176.

The previous prime is 28292153. The next prime is 28292183. The reversal of 28292168 is 86129282.

It is an interprime number because it is at equal distance from previous prime (28292153) and next prime (28292183).

It can be written as a sum of positive squares in 2 ways, for example, as 27478564 + 813604 = 5242^2 + 902^2 .

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, 60743 + ... + 61206.

Almost surely, 2^28292168 is an apocalyptic number.

It is an amenable number.

28292168 is a deficient number, since it is larger than the sum of its proper divisors (26585332).

28292168 is a wasteful number, since it uses less digits than its factorization.

28292168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121984 (or 121980 counting only the distinct ones).

The product of its digits is 27648, while the sum is 38.

The square root of 28292168 is about 5319.0382589337. The cubic root of 28292168 is about 304.7114282133.

The spelling of 28292168 in words is "twenty-eight million, two hundred ninety-two thousand, one hundred sixty-eight".