822009492 has 96 divisors (see below), whose sum is σ = 2213890560. Its totient is φ = 263554560.

The previous prime is 822009481. The next prime is 822009493. The reversal of 822009492 is 294900228.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (822009493) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 321973 + ... + 324515.

It is an arithmetic number, because the mean of its divisors is an integer number (23061360).

Almost surely, 2^822009492 is an apocalyptic number.

822009492 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 822009492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1106945280).

822009492 is an abundant number, since it is smaller than the sum of its proper divisors (1391881068).

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

822009492 is a wasteful number, since it uses less digits than its factorization.

822009492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2670 (or 2662 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 822009492 is about 28670.7079089443. The cubic root of 822009492 is about 936.7541177677.

Adding to 822009492 its product of nonzero digits (20736), we get a palindrome (822030228).

The spelling of 822009492 in words is "eight hundred twenty-two million, nine thousand, four hundred ninety-two".