1002002028 has 24 divisors (see below), whose sum is σ = 2344527360. Its totient is φ = 333068880.

The previous prime is 1002002021. The next prime is 1002002033. The reversal of 1002002028 is 8202002001.

It is a super-2 number, since 2×1002002028² = 2008016128232225568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1002001998 and 1002002016.

It is not an unprimeable number, because it can be changed into a prime (1002002021) 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, 111988 + ... + 120603.

It is an arithmetic number, because the mean of its divisors is an integer number (97688640).

Almost surely, 2^1002002028 is an apocalyptic number.

It is an amenable number.

1002002028 is an abundant number, since it is smaller than the sum of its proper divisors (1342525332).

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

1002002028 is a wasteful number, since it uses less digits than its factorization.

1002002028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232957 (or 232955 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 1002002028 is about 31654.4156161506. The cubic root of 1002002028 is about 1000.6668978151. Note that the first 3 decimals are identical.

Adding to 1002002028 its reverse (8202002001), we get a palindrome (9204004029).

The spelling of 1002002028 in words is "one billion, two million, two thousand, twenty-eight".