28308454483761 has 9 divisors (see below), whose sum is σ = 40890012865689. Its totient is φ = 18872292348036.

The previous prime is 28308454483747. The next prime is 28308454483819. The reversal of 28308454483761 is 16738445480382.

The square root of 28308454483761 is 5320569.

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

28308454483761 is a `hidden beast` number, since 2 + 8 + 3 + 0 + 8 + 4 + 544 + 83 + 7 + 6 + 1 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 28308454483761 - 2¹⁵ = 28308454450993 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28308454488761) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 15074946 + ... + 16848468.

Almost surely, 2^{28308454483761} is an apocalyptic number.

28308454483761 is the 5320569-th square number.

28308454483761 is the 2660285-th centered octagonal number.

It is an amenable number.

28308454483761 is a deficient number, since it is larger than the sum of its proper divisors (12581558381928).

28308454483761 is an frugal number, since it uses more digits than its factorization.

28308454483761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3547052 (or 1773526 counting only the distinct ones).

The product of its (nonzero) digits is 123863040, while the sum is 63.

The spelling of 28308454483761 in words is "twenty-eight trillion, three hundred eight billion, four hundred fifty-four million, four hundred eighty-three thousand, seven hundred sixty-one".