823213936 has 10 divisors (see below), whose sum is σ = 1594977032. Its totient is φ = 411606960.

The previous prime is 823213921. The next prime is 823213943. The reversal of 823213936 is 639312328.

It is a super-2 number, since 2×823213936² = 1355362368849224192, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 823213895 and 823213904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25725420 + ... + 25725451.

Almost surely, 2^823213936 is an apocalyptic number.

It is an amenable number.

823213936 is a deficient number, since it is larger than the sum of its proper divisors (771763096).

823213936 is a wasteful number, since it uses less digits than its factorization.

823213936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51450879 (or 51450873 counting only the distinct ones).

The product of its digits is 46656, while the sum is 37.

The square root of 823213936 is about 28691.7050033629. The cubic root of 823213936 is about 937.2114187573.

The spelling of 823213936 in words is "eight hundred twenty-three million, two hundred thirteen thousand, nine hundred thirty-six".