28480304 has 20 divisors (see below), whose sum is σ = 58427064. Its totient is φ = 13402368.

The previous prime is 28480273. The next prime is 28480313. The reversal of 28480304 is 40308482.

It is a super-2 number, since 2×28480304² = 1622255431864832, which contains 22 as substring.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52082 + ... + 52625.

Almost surely, 2^28480304 is an apocalyptic number.

It is an amenable number.

28480304 is an abundant number, since it is smaller than the sum of its proper divisors (29946760).

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

28480304 is a wasteful number, since it uses less digits than its factorization.

28480304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104732 (or 104726 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 28480304 is about 5336.6941077787. The cubic root of 28480304 is about 305.3853554291.

Adding to 28480304 its reverse (40308482), we get a palindrome (68788786).

The spelling of 28480304 in words is "twenty-eight million, four hundred eighty thousand, three hundred four".