1000332220 has 24 divisors (see below), whose sum is σ = 2149552944. Its totient is φ = 390827136.

The previous prime is 1000332127. The next prime is 1000332233. The reversal of 1000332220 is 222330001.

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 1000332220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 580729 + ... + 582448.

It is an arithmetic number, because the mean of its divisors is an integer number (89564706).

Almost surely, 2^1000332220 is an apocalyptic number.

1000332220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000332220 is an abundant number, since it is smaller than the sum of its proper divisors (1149220724).

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

1000332220 is a wasteful number, since it uses less digits than its factorization.

1000332220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1163229 (or 1163227 counting only the distinct ones).

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

The square root of 1000332220 is about 31628.0290249013. The cubic root of 1000332220 is about 1000.1107277389.

Adding to 1000332220 its reverse (222330001), we get a palindrome (1222662221).

The spelling of 1000332220 in words is "one billion, three hundred thirty-two thousand, two hundred twenty".