823081408 has 56 divisors (see below), whose sum is σ = 1665305280. Its totient is φ = 403553280.

The previous prime is 823081397. The next prime is 823081423. The reversal of 823081408 is 804180328.

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 7 ways as a sum of consecutive naturals, for example, 874218 + ... + 875158.

Almost surely, 2^823081408 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 823081408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (832652640).

823081408 is an abundant number, since it is smaller than the sum of its proper divisors (842223872).

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

823081408 is a wasteful number, since it uses less digits than its factorization.

823081408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1205 (or 1195 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 34.

The square root of 823081408 is about 28689.3953927231. The cubic root of 823081408 is about 937.1611226292.

The spelling of 823081408 in words is "eight hundred twenty-three million, eighty-one thousand, four hundred eight".