28480950169 has 9 divisors (see below), whose sum is σ = 33132275487. Its totient is φ = 24411230424.

The previous prime is 28480950131. The next prime is 28480950193. The reversal of 28480950169 is 96105908482.

The square root of 28480950169 is 168763.

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., 17892540169 + 10588410000 = 133763^2 + 102900^2 .

It is not a de Polignac number, because 28480950169 - 2¹⁷ = 28480819097 is a prime.

It is a super-2 number, since 2×28480950169² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28480950109) 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, 1169287 + ... + 1193395.

It is an arithmetic number, because the mean of its divisors is an integer number (3681363943).

Almost surely, 2^28480950169 is an apocalyptic number.

28480950169 is the 168763-rd square number.

28480950169 is the 84382-nd centered octagonal number.

It is an amenable number.

28480950169 is a deficient number, since it is larger than the sum of its proper divisors (4651325318).

28480950169 is an frugal number, since it uses more digits than its factorization.

28480950169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48232 (or 24116 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 52.

The spelling of 28480950169 in words is "twenty-eight billion, four hundred eighty million, nine hundred fifty thousand, one hundred sixty-nine".