28070487 has 24 divisors (see below), whose sum is σ = 41468544. Its totient is φ = 18293904.

The previous prime is 28070459. The next prime is 28070491. The reversal of 28070487 is 78407082.

It is not a de Polignac number, because 28070487 - 2¹⁵ = 28037719 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28070437) 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 23 ways as a sum of consecutive naturals, for example, 99048 + ... + 99330.

It is an arithmetic number, because the mean of its divisors is an integer number (1727856).

Almost surely, 2^28070487 is an apocalyptic number.

28070487 is a deficient number, since it is larger than the sum of its proper divisors (13398057).

28070487 is a wasteful number, since it uses less digits than its factorization.

28070487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499 (or 496 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

The square root of 28070487 is about 5298.1588311412. The cubic root of 28070487 is about 303.9134932471.

The spelling of 28070487 in words is "twenty-eight million, seventy thousand, four hundred eighty-seven".