28488708 has 36 divisors (see below), whose sum is σ = 73199308. Its totient is φ = 9339840.

The previous prime is 28488703. The next prime is 28488709. The reversal of 28488708 is 80788482.

It can be written as a sum of positive squares in 2 ways, for example, as 419904 + 28068804 = 648^2 + 5298^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (28488703) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4291 + ... + 8682.

Almost surely, 2^28488708 is an apocalyptic number.

It is an amenable number.

28488708 is an abundant number, since it is smaller than the sum of its proper divisors (44710600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28488708 is a wasteful number, since it uses less digits than its factorization.

28488708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13044 (or 13039 counting only the distinct ones).

The product of its (nonzero) digits is 229376, while the sum is 45.

The square root of 28488708 is about 5337.4814285391. The cubic root of 28488708 is about 305.4153902926.

The spelling of 28488708 in words is "twenty-eight million, four hundred eighty-eight thousand, seven hundred eight".