28094117769 has 9 divisors (see below), whose sum is σ = 40581118669. Its totient is φ = 18729076620.

The previous prime is 28094117747. The next prime is 28094117791. The reversal of 28094117769 is 96771149082.

The square root of 28094117769 is 167613.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (28094117747) and next prime (28094117791).

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 28094117769 - 2¹⁵ = 28094085001 is a prime.

It is a super-2 number, since 2×28094117769² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28094117719) 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, 474904 + ... + 530774.

Almost surely, 2^28094117769 is an apocalyptic number.

28094117769 is the 167613-rd square number.

28094117769 is the 83807-th centered octagonal number.

It is an amenable number.

28094117769 is a deficient number, since it is larger than the sum of its proper divisors (12487000900).

28094117769 is an frugal number, since it uses more digits than its factorization.

28094117769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111748 (or 55874 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 54.

The spelling of 28094117769 in words is "twenty-eight billion, ninety-four million, one hundred seventeen thousand, seven hundred sixty-nine".