1002322020 has 48 divisors (see below), whose sum is σ = 3207431808. Its totient is φ = 229102080.

The previous prime is 1002322019. The next prime is 1002322021. The reversal of 1002322020 is 202232001.

It is an interprime number because it is at equal distance from previous prime (1002322019) and next prime (1002322021).

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 = 1002321987 and 1002322005.

It is not an unprimeable number, because it can be changed into a prime (1002322021) 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 15 ways as a sum of consecutive naturals, for example, 1192821 + ... + 1193660.

It is an arithmetic number, because the mean of its divisors is an integer number (66821496).

Almost surely, 2^1002322020 is an apocalyptic number.

1002322020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1002322020 is an abundant number, since it is smaller than the sum of its proper divisors (2205109788).

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

1002322020 is a wasteful number, since it uses less digits than its factorization.

1002322020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2386500 (or 2386498 counting only the distinct ones).

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

The square root of 1002322020 is about 31659.4696733852. The cubic root of 1002322020 is about 1000.7734083520.

Adding to 1002322020 its reverse (202232001), we get a palindrome (1204554021).

The spelling of 1002322020 in words is "one billion, two million, three hundred twenty-two thousand, twenty".