28888292 has 12 divisors (see below), whose sum is σ = 52297980. Its totient is φ = 13946016.

The previous prime is 28888291. The next prime is 28888297. The reversal of 28888292 is 29288882.

It can be written as a sum of positive squares in 2 ways, for example, as 24661156 + 4227136 = 4966^2 + 2056^2 .

It is not an unprimeable number, because it can be changed into a prime (28888291) by changing a digit.

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, 124403 + ... + 124634.

It is an arithmetic number, because the mean of its divisors is an integer number (4358165).

Almost surely, 2^28888292 is an apocalyptic number.

It is an amenable number.

28888292 is a deficient number, since it is larger than the sum of its proper divisors (23409688).

28888292 is a wasteful number, since it uses less digits than its factorization.

28888292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249070 (or 249068 counting only the distinct ones).

The product of its digits is 294912, while the sum is 47.

The square root of 28888292 is about 5374.7829723627. The cubic root of 28888292 is about 306.8366894821.

The spelling of 28888292 in words is "twenty-eight million, eight hundred eighty-eight thousand, two hundred ninety-two".