28079208 has 24 divisors (see below), whose sum is σ = 76048050. Its totient is φ = 9359712.

The previous prime is 28079203. The next prime is 28079209. The reversal of 28079208 is 80297082.

It can be written as a sum of positive squares in only one way, i.e., 28068804 + 10404 = 5298^2 + 102^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (28079201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 194923 + ... + 195066.

Almost surely, 2^28079208 is an apocalyptic number.

It is an amenable number.

28079208 is an abundant number, since it is smaller than the sum of its proper divisors (47968842).

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

28079208 is a wasteful number, since it uses less digits than its factorization.

28079208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390001 (or 389994 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 28079208 is about 5298.9817889855. The cubic root of 28079208 is about 303.9449634901.

The spelling of 28079208 in words is "twenty-eight million, seventy-nine thousand, two hundred eight".