1002032220 has 96 divisors (see below), whose sum is σ = 3309981696. Its totient is φ = 221644800.

The previous prime is 1002032219. The next prime is 1002032233. The reversal of 1002032220 is 222302001.

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 = 1002032196 and 1002032205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25461 + ... + 51500.

It is an arithmetic number, because the mean of its divisors is an integer number (34478976).

Almost surely, 2^1002032220 is an apocalyptic number.

1002032220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1002032220 is an abundant number, since it is smaller than the sum of its proper divisors (2307949476).

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

1002032220 is a wasteful number, since it uses less digits than its factorization.

1002032220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77011 (or 77009 counting only the distinct ones).

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

The square root of 1002032220 is about 31654.8925128486. The cubic root of 1002032220 is about 1000.6769483043.

Adding to 1002032220 its reverse (222302001), we get a palindrome (1224334221).

The spelling of 1002032220 in words is "one billion, two million, thirty-two thousand, two hundred twenty".