828163281 has 8 divisors (see below), whose sum is σ = 1204601184. Its totient is φ = 501917120.

The previous prime is 828163261. The next prime is 828163289. The reversal of 828163281 is 182361828.

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 828163281 - 2⁷ = 828163153 is a prime.

It is a super-5 number, since 5×828163281⁵ (a number of 46 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (828163289) 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, 12547896 + ... + 12547961.

It is an arithmetic number, because the mean of its divisors is an integer number (150575148).

Almost surely, 2^828163281 is an apocalyptic number.

It is an amenable number.

828163281 is a deficient number, since it is larger than the sum of its proper divisors (376437903).

828163281 is a wasteful number, since it uses less digits than its factorization.

828163281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25095871.

The product of its digits is 36864, while the sum is 39.

The square root of 828163281 is about 28777.8262035200. The cubic root of 828163281 is about 939.0859082065.

The spelling of 828163281 in words is "eight hundred twenty-eight million, one hundred sixty-three thousand, two hundred eighty-one".