823138792 has 16 divisors (see below), whose sum is σ = 1763868960. Its totient is φ = 352773744.

The previous prime is 823138787. The next prime is 823138831. The reversal of 823138792 is 297831328.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7349398 + ... + 7349509.

It is an arithmetic number, because the mean of its divisors is an integer number (110241810).

Almost surely, 2^823138792 is an apocalyptic number.

It is an amenable number.

823138792 is an abundant number, since it is smaller than the sum of its proper divisors (940730168).

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

823138792 is a wasteful number, since it uses less digits than its factorization.

823138792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14698920 (or 14698916 counting only the distinct ones).

The product of its digits is 145152, while the sum is 43.

The square root of 823138792 is about 28690.3954660789. The cubic root of 823138792 is about 937.1829012785.

The spelling of 823138792 in words is "eight hundred twenty-three million, one hundred thirty-eight thousand, seven hundred ninety-two".