822671838 has 24 divisors (see below), whose sum is σ = 1830631608. Its totient is φ = 266812272.

The previous prime is 822671833. The next prime is 822671849. The reversal of 822671838 is 838176228.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 822671793 and 822671802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (822671833) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 616956 + ... + 618287.

It is an arithmetic number, because the mean of its divisors is an integer number (76276317).

Almost surely, 2^822671838 is an apocalyptic number.

822671838 is an abundant number, since it is smaller than the sum of its proper divisors (1007959770).

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

822671838 is a wasteful number, since it uses less digits than its factorization.

822671838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235288 (or 1235285 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 822671838 is about 28682.2565011890. The cubic root of 822671838 is about 937.0056512664.

The spelling of 822671838 in words is "eight hundred twenty-two million, six hundred seventy-one thousand, eight hundred thirty-eight".