203820020028 has 18 divisors (see below), whose sum is σ = 515211717384. Its totient is φ = 67940006664.

The previous prime is 203820020003. The next prime is 203820020059. The reversal of 203820020028 is 820020028302.

203820020028 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×203820020028² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 203820019983 and 203820020010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2830833576 + ... + 2830833647.

It is an arithmetic number, because the mean of its divisors is an integer number (28622873188).

Almost surely, 2^203820020028 is an apocalyptic number.

It is an amenable number.

203820020028 is an abundant number, since it is smaller than the sum of its proper divisors (311391697356).

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

203820020028 is a wasteful number, since it uses less digits than its factorization.

203820020028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5661667233 (or 5661667228 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The spelling of 203820020028 in words is "two hundred three billion, eight hundred twenty million, twenty thousand, twenty-eight".