822005540 has 12 divisors (see below), whose sum is σ = 1726211676. Its totient is φ = 328802208.

The previous prime is 822005537. The next prime is 822005543. The reversal of 822005540 is 45500228.

It is an interprime number because it is at equal distance from previous prime (822005537) and next prime (822005543).

It can be written as a sum of positive squares in 2 ways, for example, as 507510784 + 314494756 = 22528^2 + 17734^2 .

It is not an unprimeable number, because it can be changed into a prime (822005543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20550119 + ... + 20550158.

It is an arithmetic number, because the mean of its divisors is an integer number (143850973).

Almost surely, 2^822005540 is an apocalyptic number.

It is an amenable number.

822005540 is an abundant number, since it is smaller than the sum of its proper divisors (904206136).

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

822005540 is a wasteful number, since it uses less digits than its factorization.

822005540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41100286 (or 41100284 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 822005540 is about 28670.6389883449. The cubic root of 822005540 is about 936.7526165449.

Adding to 822005540 its reverse (45500228), we get a palindrome (867505768).

The spelling of 822005540 in words is "eight hundred twenty-two million, five thousand, five hundred forty".