28712124253 has 4 divisors (see below), whose sum is σ = 28794394300. Its totient is φ = 28629854208.

The previous prime is 28712124241. The next prime is 28712124263. The reversal of 28712124253 is 35242121782.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13206146724 + 15505977529 = 114918^2 + 124523^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28712124253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28712124263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41134500 + ... + 41135197.

It is an arithmetic number, because the mean of its divisors is an integer number (7198598575).

Almost surely, 2^28712124253 is an apocalyptic number.

It is an amenable number.

28712124253 is a deficient number, since it is larger than the sum of its proper divisors (82270047).

28712124253 is an equidigital number, since it uses as much as digits as its factorization.

28712124253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82270046.

The product of its digits is 53760, while the sum is 37.

The spelling of 28712124253 in words is "twenty-eight billion, seven hundred twelve million, one hundred twenty-four thousand, two hundred fifty-three".