28054700717 has 4 divisors (see below), whose sum is σ = 29022104220. Its totient is φ = 27087297216.

The previous prime is 28054700711. The next prime is 28054700749. The reversal of 28054700717 is 71700745082.

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 17187472201 + 10867228516 = 131101^2 + 104246^2 .

It is a cyclic number.

It is not a de Polignac number, because 28054700717 - 2⁴ = 28054700701 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 (28054700711) 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, 483701708 + ... + 483701765.

It is an arithmetic number, because the mean of its divisors is an integer number (7255526055).

Almost surely, 2^28054700717 is an apocalyptic number.

It is an amenable number.

28054700717 is a deficient number, since it is larger than the sum of its proper divisors (967403503).

28054700717 is an equidigital number, since it uses as much as digits as its factorization.

28054700717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 967403502.

The product of its (nonzero) digits is 109760, while the sum is 41.

The spelling of 28054700717 in words is "twenty-eight billion, fifty-four million, seven hundred thousand, seven hundred seventeen".