1022320020 has 24 divisors (see below), whose sum is σ = 2862496224. Its totient is φ = 272618656.

The previous prime is 1022320009. The next prime is 1022320063. The reversal of 1022320020 is 200232201.

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 = 1022319978 and 1022320005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8519274 + ... + 8519393.

It is an arithmetic number, because the mean of its divisors is an integer number (119270676).

Almost surely, 2^1022320020 is an apocalyptic number.

1022320020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1022320020 is an abundant number, since it is smaller than the sum of its proper divisors (1840176204).

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

1022320020 is a wasteful number, since it uses less digits than its factorization.

1022320020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17038679 (or 17038677 counting only the distinct ones).

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

The square root of 1022320020 is about 31973.7395373141. The cubic root of 1022320020 is about 1007.3853293048.

Adding to 1022320020 its reverse (200232201), we get a palindrome (1222552221).

The spelling of 1022320020 in words is "one billion, twenty-two million, three hundred twenty thousand, twenty".