823674920 has 16 divisors (see below), whose sum is σ = 1853268660. Its totient is φ = 329469952.

The previous prime is 823674893. The next prime is 823674937. The reversal of 823674920 is 29476328.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 806219236 + 17455684 = 28394^2 + 4178^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10295897 + ... + 10295976.

Almost surely, 2^823674920 is an apocalyptic number.

It is an amenable number.

823674920 is an abundant number, since it is smaller than the sum of its proper divisors (1029593740).

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

823674920 is a wasteful number, since it uses less digits than its factorization.

823674920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20591884 (or 20591880 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 823674920 is about 28699.7372810275. The cubic root of 823674920 is about 937.3863262470.

The spelling of 823674920 in words is "eight hundred twenty-three million, six hundred seventy-four thousand, nine hundred twenty".