28246516489 has 3 divisors (see below), whose sum is σ = 28246684557. Its totient is φ = 28246348422.

The previous prime is 28246516483. The next prime is 28246516567. The reversal of 28246516489 is 98461564282.

The square root of 28246516489 is 168067.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 98461564282 = 2 ⋅49230782141.

It is not a de Polignac number, because 28246516489 - 2¹⁵ = 28246483721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28246516483) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 84034 + ... + 252100.

It is an arithmetic number, because the mean of its divisors is an integer number (9415561519).

Almost surely, 2^28246516489 is an apocalyptic number.

28246516489 is the 168067-th square number.

28246516489 is the 84034-th centered octagonal number.

It is an amenable number.

28246516489 is a deficient number, since it is larger than the sum of its proper divisors (168068).

28246516489 is an frugal number, since it uses more digits than its factorization.

28246516489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336134 (or 168067 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 55.

The spelling of 28246516489 in words is "twenty-eight billion, two hundred forty-six million, five hundred sixteen thousand, four hundred eighty-nine".