823199552 has 56 divisors (see below), whose sum is σ = 1878518976. Its totient is φ = 350604288.

The previous prime is 823199543. The next prime is 823199557. The reversal of 823199552 is 255991328.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (823199557) 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, 67388 + ... + 78660.

Almost surely, 2^823199552 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 823199552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (939259488).

823199552 is an abundant number, since it is smaller than the sum of its proper divisors (1055319424).

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

823199552 is a wasteful number, since it uses less digits than its factorization.

823199552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11455 (or 11445 counting only the distinct ones).

The product of its digits is 194400, while the sum is 44.

The square root of 823199552 is about 28691.4543374852. The cubic root of 823199552 is about 937.2059601003.

The spelling of 823199552 in words is "eight hundred twenty-three million, one hundred ninety-nine thousand, five hundred fifty-two".