28486988 has 12 divisors (see below), whose sum is σ = 50106672. Its totient is φ = 14170800.

The previous prime is 28486987. The next prime is 28487033. The reversal of 28486988 is 88968482.

It is not an unprimeable number, because it can be changed into a prime (28486987) 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, 17288 + ... + 18863.

It is an arithmetic number, because the mean of its divisors is an integer number (4175556).

Almost surely, 2^28486988 is an apocalyptic number.

It is an amenable number.

28486988 is a deficient number, since it is larger than the sum of its proper divisors (21619684).

28486988 is a wasteful number, since it uses less digits than its factorization.

28486988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36352 (or 36350 counting only the distinct ones).

The product of its digits is 1769472, while the sum is 53.

The square root of 28486988 is about 5337.3203014247. The cubic root of 28486988 is about 305.4092437047.

The spelling of 28486988 in words is "twenty-eight million, four hundred eighty-six thousand, nine hundred eighty-eight".