28230384361 has 9 divisors (see below), whose sum is σ = 28368665143. Its totient is φ = 28092776800.

The previous prime is 28230384349. The next prime is 28230384367. The reversal of 28230384361 is 16348303282.

The square root of 28230384361 is 168019.

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

It can be written as a sum of positive squares in only one way, i.e., 27949486761 + 280897600 = 167181^2 + 16760^2 .

It is not a de Polignac number, because 28230384361 - 2²¹ = 28228287209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28230384367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 67375410 + ... + 67375828.

Almost surely, 2^28230384361 is an apocalyptic number.

28230384361 is the 168019-th square number.

28230384361 is the 84010-th centered octagonal number.

It is an amenable number.

28230384361 is a deficient number, since it is larger than the sum of its proper divisors (138280782).

28230384361 is an frugal number, since it uses more digits than its factorization.

28230384361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1640 (or 820 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 40.

The spelling of 28230384361 in words is "twenty-eight billion, two hundred thirty million, three hundred eighty-four thousand, three hundred sixty-one".