28071484 has 12 divisors (see below), whose sum is σ = 56143024. Its totient is φ = 12030624.

The previous prime is 28071481. The next prime is 28071487. The reversal of 28071484 is 48417082.

It is an interprime number because it is at equal distance from previous prime (28071481) and next prime (28071487).

28071484 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28071481) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 501249 + ... + 501304.

Almost surely, 2^28071484 is an apocalyptic number.

It is an amenable number.

28071484 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28071484 is a wasteful number, since it uses less digits than its factorization.

28071484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1002564 (or 1002562 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 34.

The square root of 28071484 is about 5298.2529195953. The cubic root of 28071484 is about 303.9170913104.

The spelling of 28071484 in words is "twenty-eight million, seventy-one thousand, four hundred eighty-four".