28080170801 has 8 divisors (see below), whose sum is σ = 29789022024. Its totient is φ = 26377661440.

The previous prime is 28080170759. The next prime is 28080170827. The reversal of 28080170801 is 10807108082.

It can be written as a sum of positive squares in 4 ways, for example, as 8663141776 + 19417029025 = 93076^2 + 139345^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28080170801 - 2¹⁸ = 28079908657 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28080170501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1576340 + ... + 1594053.

It is an arithmetic number, because the mean of its divisors is an integer number (3723627753).

Almost surely, 2^28080170801 is an apocalyptic number.

It is an amenable number.

28080170801 is a deficient number, since it is larger than the sum of its proper divisors (1708851223).

28080170801 is a wasteful number, since it uses less digits than its factorization.

28080170801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3170931.

The product of its (nonzero) digits is 7168, while the sum is 35.

Adding to 28080170801 its reverse (10807108082), we get a palindrome (38887278883).

The spelling of 28080170801 in words is "twenty-eight billion, eighty million, one hundred seventy thousand, eight hundred one".