28630279428529 has 9 divisors (see below), whose sum is σ = 28664087714283. Its totient is φ = 28596510990432.

The previous prime is 28630279428511. The next prime is 28630279428547. The reversal of 28630279428529 is 92582497203682.

The square root of 28630279428529 is 5350727.

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

It is an interprime number because it is at equal distance from previous prime (28630279428511) and next prime (28630279428547).

It can be written as a sum of positive squares in only one way, i.e., 8787530998129 + 19842748430400 = 2964377^2 + 4454520^2 .

It is not a de Polignac number, because 28630279428529 - 2²⁷ = 28630145210801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28630279428229) 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 8 ways as a sum of consecutive naturals, for example, 5398880892 + ... + 5398886194.

Almost surely, 2^{28630279428529} is an apocalyptic number.

28630279428529 is the 5350727-th square number.

28630279428529 is the 2675364-th centered octagonal number.

It is an amenable number.

28630279428529 is a deficient number, since it is larger than the sum of its proper divisors (33808285754).

28630279428529 is an frugal number, since it uses more digits than its factorization.

28630279428529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12624 (or 6312 counting only the distinct ones).

The product of its (nonzero) digits is 209018880, while the sum is 67.

The spelling of 28630279428529 in words is "twenty-eight trillion, six hundred thirty billion, two hundred seventy-nine million, four hundred twenty-eight thousand, five hundred twenty-nine".