28851522273 has 90 divisors (see below), whose sum is σ = 53260551366. Its totient is φ = 15516168192.

The previous prime is 28851522263. The next prime is 28851522281. The reversal of 28851522273 is 37222515882.

28851522273 is a `hidden beast` number, since 2 + 8 + 8 + 51 + 522 + 2 + 73 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 12350321424 + 16501200849 = 111132^2 + 128457^2 .

It is not a de Polignac number, because 28851522273 - 2⁹ = 28851521761 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28851522263) by changing a digit.

It is a polite number, since it can be written in 89 ways as a sum of consecutive naturals, for example, 1134465 + ... + 1159617.

Almost surely, 2^28851522273 is an apocalyptic number.

It is an amenable number.

28851522273 is a deficient number, since it is larger than the sum of its proper divisors (24409029093).

28851522273 is a wasteful number, since it uses less digits than its factorization.

28851522273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25213 (or 25180 counting only the distinct ones).

The product of its digits is 537600, while the sum is 45.

The spelling of 28851522273 in words is "twenty-eight billion, eight hundred fifty-one million, five hundred twenty-two thousand, two hundred seventy-three".