28490028487 has 8 divisors (see below), whose sum is σ = 29411064320. Its totient is φ = 27569117880.

The previous prime is 28490028481. The next prime is 28490028509. The reversal of 28490028487 is 78482009482.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28490028487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28490028481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 710188 + ... + 749230.

It is an arithmetic number, because the mean of its divisors is an integer number (3676383040).

Almost surely, 2^28490028487 is an apocalyptic number.

28490028487 is a deficient number, since it is larger than the sum of its proper divisors (921035833).

28490028487 is a wasteful number, since it uses less digits than its factorization.

28490028487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62613.

The product of its (nonzero) digits is 2064384, while the sum is 52.

The spelling of 28490028487 in words is "twenty-eight billion, four hundred ninety million, twenty-eight thousand, four hundred eighty-seven".