823111828 has 48 divisors (see below), whose sum is σ = 1798078464. Its totient is φ = 320300640.

The previous prime is 823111819. The next prime is 823111837. The reversal of 823111828 is 828111328.

It is an interprime number because it is at equal distance from previous prime (823111819) and next prime (823111837).

It is a junction number, because it is equal to n+sod(n) for n = 823111793 and 823111802.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 494125 + ... + 495787.

It is an arithmetic number, because the mean of its divisors is an integer number (37459968).

Almost surely, 2^823111828 is an apocalyptic number.

It is an amenable number.

823111828 is an abundant number, since it is smaller than the sum of its proper divisors (974966636).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

823111828 is a wasteful number, since it uses less digits than its factorization.

823111828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3292 (or 3290 counting only the distinct ones).

The product of its digits is 6144, while the sum is 34.

The square root of 823111828 is about 28689.9255488752. The cubic root of 823111828 is about 937.1726678987.

The spelling of 823111828 in words is "eight hundred twenty-three million, one hundred eleven thousand, eight hundred twenty-eight".