828121 has 8 divisors (see below), whose sum is σ = 1002240. Its totient is φ = 667968.

The previous prime is 828119. The next prime is 828127. The reversal of 828121 is 121828.

828121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 828121 - 2¹ = 828119 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 828092 and 828101.

It is not an unprimeable number, because it can be changed into a prime (828127) 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, 3361 + ... + 3598.

It is an arithmetic number, because the mean of its divisors is an integer number (125280).

2⁸²⁸¹²¹ is an apocalyptic number.

It is an amenable number.

828121 is a deficient number, since it is larger than the sum of its proper divisors (174119).

828121 is a wasteful number, since it uses less digits than its factorization.

828121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6983.

The product of its digits is 256, while the sum is 22.

The square root of 828121 is about 910.0115383884. The cubic root of 828121 is about 93.9069926589.

Adding to 828121 its reverse (121828), we get a palindrome (949949).

It can be divided in two parts, 828 and 121, that added together give a palindrome (949).

The spelling of 828121 in words is "eight hundred twenty-eight thousand, one hundred twenty-one".