28860688 has 20 divisors (see below), whose sum is σ = 56073420. Its totient is φ = 14390144.

The previous prime is 28860683. The next prime is 28860691. The reversal of 28860688 is 88606882.

It can be written as a sum of positive squares in 2 ways, for example, as 7033104 + 21827584 = 2652^2 + 4672^2 .

It is not an unprimeable number, because it can be changed into a prime (28860683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3906 + ... + 8542.

It is an arithmetic number, because the mean of its divisors is an integer number (2803671).

Almost surely, 2^28860688 is an apocalyptic number.

It is an amenable number.

28860688 is a deficient number, since it is larger than the sum of its proper divisors (27212732).

28860688 is a wasteful number, since it uses less digits than its factorization.

28860688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5034 (or 5028 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 46.

The square root of 28860688 is about 5372.2144409917. The cubic root of 28860688 is about 306.7389264714.

The spelling of 28860688 in words is "twenty-eight million, eight hundred sixty thousand, six hundred eighty-eight".