28246480 has 20 divisors (see below), whose sum is σ = 65673252. Its totient is φ = 11298560.

The previous prime is 28246459. The next prime is 28246481. The reversal of 28246480 is 8464282.

It can be written as a sum of positive squares in 2 ways, for example, as 14318656 + 13927824 = 3784^2 + 3732^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28246481) by changing a digit.

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, 176461 + ... + 176620.

Almost surely, 2^28246480 is an apocalyptic number.

28246480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28246480 is an abundant number, since it is smaller than the sum of its proper divisors (37426772).

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

28246480 is a wasteful number, since it uses less digits than its factorization.

28246480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353094 (or 353088 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 34.

The square root of 28246480 is about 5314.7417623060. The cubic root of 28246480 is about 304.5473173502.

The spelling of 28246480 in words is "twenty-eight million, two hundred forty-six thousand, four hundred eighty".