19500002028 has 36 divisors (see below), whose sum is σ = 53083340128. Its totient is φ = 6000000480.

The previous prime is 19500002003. The next prime is 19500002029. The reversal of 19500002028 is 82020000591.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×19500002028² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19500001992 and 19500002010.

It is not an unprimeable number, because it can be changed into a prime (19500002029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20832868 + ... + 20833803.

Almost surely, 2^19500002028 is an apocalyptic number.

19500002028 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

19500002028 is an abundant number, since it is smaller than the sum of its proper divisors (33583338100).

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

19500002028 is a wasteful number, since it uses less digits than its factorization.

19500002028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41666694 (or 41666689 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The spelling of 19500002028 in words is "nineteen billion, five hundred million, two thousand, twenty-eight".