2028201616 has 20 divisors (see below), whose sum is σ = 4491018112. Its totient is φ = 869229216.

The previous prime is 2028201599. The next prime is 2028201647. The reversal of 2028201616 is 6161028202.

It is a super-2 number, since 2×2028201616² = 8227203590290022912, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9054360 + ... + 9054583.

Almost surely, 2^2028201616 is an apocalyptic number.

It is an amenable number.

2028201616 is an abundant number, since it is smaller than the sum of its proper divisors (2462816496).

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

2028201616 is a wasteful number, since it uses less digits than its factorization.

2028201616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18108958 (or 18108952 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 2028201616 is about 45035.5594613856. The cubic root of 2028201616 is about 1265.8153993455.

Adding to 2028201616 its reverse (6161028202), we get a palindrome (8189229818).

The spelling of 2028201616 in words is "two billion, twenty-eight million, two hundred one thousand, six hundred sixteen".