1003023220 has 24 divisors (see below), whose sum is σ = 2107161504. Its totient is φ = 401054496.

The previous prime is 1003023181. The next prime is 1003023227. The reversal of 1003023220 is 223203001.

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 1003023220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1003023227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53527 + ... + 69793.

It is an arithmetic number, because the mean of its divisors is an integer number (87798396).

Almost surely, 2^1003023220 is an apocalyptic number.

1003023220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1003023220 is an abundant number, since it is smaller than the sum of its proper divisors (1104138284).

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

1003023220 is a wasteful number, since it uses less digits than its factorization.

1003023220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19359 (or 19357 counting only the distinct ones).

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

The square root of 1003023220 is about 31670.5418330663. The cubic root of 1003023220 is about 1001.0067261623.

Adding to 1003023220 its reverse (223203001), we get a palindrome (1226226221).

The spelling of 1003023220 in words is "one billion, three million, twenty-three thousand, two hundred twenty".