2001228328 has 16 divisors (see below), whose sum is σ = 4093421760. Its totient is φ = 909649200.

The previous prime is 2001228323. The next prime is 2001228349. The reversal of 2001228328 is 8238221002.

It is a junction number, because it is equal to n+sod(n) for n = 2001228296 and 2001228305.

It is not an unprimeable number, because it can be changed into a prime (2001228323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11370528 + ... + 11370703.

It is an arithmetic number, because the mean of its divisors is an integer number (255838860).

Almost surely, 2^2001228328 is an apocalyptic number.

It is an amenable number.

2001228328 is an abundant number, since it is smaller than the sum of its proper divisors (2092193432).

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

2001228328 is a wasteful number, since it uses less digits than its factorization.

2001228328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22741248 (or 22741244 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 2001228328 is about 44735.0905665787. The cubic root of 2001228328 is about 1260.1789298258.

It can be divided in two parts, 200 and 1228328, that added together give a triangular number (1228528 = T₁₅₆₇).

The spelling of 2001228328 in words is "two billion, one million, two hundred twenty-eight thousand, three hundred twenty-eight".