823988 has 24 divisors (see below), whose sum is σ = 1604064. Its totient is φ = 367200.

The previous prime is 823981. The next prime is 823993. The reversal of 823988 is 889328.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 823988.

It is not an unprimeable number, because it can be changed into a prime (823981) 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, 2531 + ... + 2837.

It is an arithmetic number, because the mean of its divisors is an integer number (66836).

2⁸²³⁹⁸⁸ is an apocalyptic number.

It is an amenable number.

823988 is a deficient number, since it is larger than the sum of its proper divisors (780076).

823988 is a wasteful number, since it uses less digits than its factorization.

823988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383 (or 381 counting only the distinct ones).

The product of its digits is 27648, while the sum is 38.

The square root of 823988 is about 907.7378476190. The cubic root of 823988 is about 93.7505078491.

The spelling of 823988 in words is "eight hundred twenty-three thousand, nine hundred eighty-eight".