1002022320 has 160 divisors (see below), whose sum is σ = 3358660032. Its totient is φ = 245661696.

The previous prime is 1002022303. The next prime is 1002022327. The reversal of 1002022320 is 232202001.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1002022296 and 1002022305.

It is not an unprimeable number, because it can be changed into a prime (1002022327) 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 31 ways as a sum of consecutive naturals, for example, 1050964 + ... + 1051916.

Almost surely, 2^1002022320 is an apocalyptic number.

1002022320 is a gapful number since it is divisible by the number (10) 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 1002022320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1679330016).

1002022320 is an abundant number, since it is smaller than the sum of its proper divisors (2356637712).

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

1002022320 is a wasteful number, since it uses less digits than its factorization.

1002022320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1319 (or 1313 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 1002022320 is about 31654.7361385307. The cubic root of 1002022320 is about 1000.6736527567.

Adding to 1002022320 its reverse (232202001), we get a palindrome (1234224321).

The spelling of 1002022320 in words is "one billion, two million, twenty-two thousand, three hundred twenty".