828481 has 4 divisors (see below), whose sum is σ = 847792. Its totient is φ = 809172.

The previous prime is 828449. The next prime is 828517. The reversal of 828481 is 184828.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 828481 - 2⁵ = 828449 is a prime.

It is a super-2 number, since 2×828481² = 1372761534722, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (828431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9591 + ... + 9676.

It is an arithmetic number, because the mean of its divisors is an integer number (211948).

2⁸²⁸⁴⁸¹ is an apocalyptic number.

It is an amenable number.

828481 is a deficient number, since it is larger than the sum of its proper divisors (19311).

828481 is a wasteful number, since it uses less digits than its factorization.

828481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19310.

The product of its digits is 4096, while the sum is 31.

The square root of 828481 is about 910.2093165860. The cubic root of 828481 is about 93.9205984080.

The spelling of 828481 in words is "eight hundred twenty-eight thousand, four hundred eighty-one".