1822420008 has 24 divisors (see below), whose sum is σ = 4935721050. Its totient is φ = 607473312.

The previous prime is 1822420007. The next prime is 1822420013. The reversal of 1822420008 is 8000242281.

It can be written as a sum of positive squares in only one way, i.e., 1790813124 + 31606884 = 42318^2 + 5622^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (1822420007) 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 5 ways as a sum of consecutive naturals, for example, 12655623 + ... + 12655766.

Almost surely, 2^1822420008 is an apocalyptic number.

1822420008 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1822420008 is an abundant number, since it is smaller than the sum of its proper divisors (3113301042).

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

1822420008 is a wasteful number, since it uses less digits than its factorization.

1822420008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25311401 (or 25311394 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 1822420008 is about 42689.8115245312. The cubic root of 1822420008 is about 1221.4700562849.

Adding to 1822420008 its reverse (8000242281), we get a palindrome (9822662289).

The spelling of 1822420008 in words is "one billion, eight hundred twenty-two million, four hundred twenty thousand, eight".