28948896 has 36 divisors (see below), whose sum is σ = 82324242. Its totient is φ = 9649536.

The previous prime is 28948883. The next prime is 28948921. The reversal of 28948896 is 69884982.

It can be written as a sum of positive squares in only one way, i.e., 28772496 + 176400 = 5364^2 + 420^2 .

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

It is a nude number because it is divisible by every one of its digits.

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 5 ways as a sum of consecutive naturals, for example, 49971 + ... + 50546.

Almost surely, 2^28948896 is an apocalyptic number.

It is an amenable number.

28948896 is an abundant number, since it is smaller than the sum of its proper divisors (53375346).

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

28948896 is a wasteful number, since it uses less digits than its factorization.

28948896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100533 (or 100522 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 54.

The square root of 28948896 is about 5380.4178276413. The cubic root of 28948896 is about 307.0511078604.

The spelling of 28948896 in words is "twenty-eight million, nine hundred forty-eight thousand, eight hundred ninety-six".