823376988 has 240 divisors, whose sum is σ = 2601984000. Its totient is φ = 226709280.

The previous prime is 823376971. The next prime is 823376999. The reversal of 823376988 is 889673328.

823376988 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 3444973 + ... + 3445211.

It is an arithmetic number, because the mean of its divisors is an integer number (10841600).

Almost surely, 2^823376988 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 823376988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1300992000).

823376988 is an abundant number, since it is smaller than the sum of its proper divisors (1778607012).

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

823376988 is a wasteful number, since it uses less digits than its factorization.

823376988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307 (or 282 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The square root of 823376988 is about 28694.5463111024. The cubic root of 823376988 is about 937.2732917413.

The spelling of 823376988 in words is "eight hundred twenty-three million, three hundred seventy-six thousand, nine hundred eighty-eight".