822009078 has 48 divisors (see below), whose sum is σ = 1949403456. Its totient is φ = 248263920.

The previous prime is 822009061. The next prime is 822009079. The reversal of 822009078 is 870900228.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (822009079) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54025 + ... + 67547.

It is an arithmetic number, because the mean of its divisors is an integer number (40612572).

Almost surely, 2^822009078 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 822009078, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (974701728).

822009078 is an abundant number, since it is smaller than the sum of its proper divisors (1127394378).

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

822009078 is a wasteful number, since it uses less digits than its factorization.

822009078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13849 (or 13846 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 822009078 is about 28670.7006890310. The cubic root of 822009078 is about 936.7539605042.

The spelling of 822009078 in words is "eight hundred twenty-two million, nine thousand, seventy-eight".