28064487 has 8 divisors (see below), whose sum is σ = 40821120. Its totient is φ = 17008760.

The previous prime is 28064483. The next prime is 28064521. The reversal of 28064487 is 78446082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28064487 - 2² = 28064483 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28064483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 425187 + ... + 425252.

It is an arithmetic number, because the mean of its divisors is an integer number (5102640).

Almost surely, 2^28064487 is an apocalyptic number.

28064487 is a deficient number, since it is larger than the sum of its proper divisors (12756633).

28064487 is a wasteful number, since it uses less digits than its factorization.

28064487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 850453.

The product of its (nonzero) digits is 86016, while the sum is 39.

The square root of 28064487 is about 5297.5925664400. The cubic root of 28064487 is about 303.8918381081.

The spelling of 28064487 in words is "twenty-eight million, sixty-four thousand, four hundred eighty-seven".