28287017573 has 4 divisors (see below), whose sum is σ = 28287631680. Its totient is φ = 28286403468.

The previous prime is 28287017533. The next prime is 28287017579. The reversal of 28287017573 is 37571078282.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37571078282 = 2 ⋅18785539141.

It is a cyclic number.

It is not a de Polignac number, because 28287017573 - 2⁶ = 28287017509 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 (28287017579) 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, 231815 + ... + 332132.

It is an arithmetic number, because the mean of its divisors is an integer number (7071907920).

Almost surely, 2^28287017573 is an apocalyptic number.

It is an amenable number.

28287017573 is a deficient number, since it is larger than the sum of its proper divisors (614107).

28287017573 is an equidigital number, since it uses as much as digits as its factorization.

28287017573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614106.

The product of its (nonzero) digits is 1317120, while the sum is 50.

The spelling of 28287017573 in words is "twenty-eight billion, two hundred eighty-seven million, seventeen thousand, five hundred seventy-three".