1023003220 has 48 divisors (see below), whose sum is σ = 2302147008. Its totient is φ = 380480000.

The previous prime is 1023003209. The next prime is 1023003221. The reversal of 1023003220 is 223003201.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1023003220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023003221) 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, 10095 + ... + 46345.

It is an arithmetic number, because the mean of its divisors is an integer number (47961396).

Almost surely, 2^1023003220 is an apocalyptic number.

1023003220 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 1023003220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1151073504).

1023003220 is an abundant number, since it is smaller than the sum of its proper divisors (1279143788).

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

1023003220 is a wasteful number, since it uses less digits than its factorization.

1023003220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36360 (or 36358 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 1023003220 is about 31984.4215204840. The cubic root of 1023003220 is about 1007.6096857966.

Adding to 1023003220 its reverse (223003201), we get a palindrome (1246006421).

The spelling of 1023003220 in words is "one billion, twenty-three million, three thousand, two hundred twenty".