20000012028 has 24 divisors (see below), whose sum is σ = 49122837120. Its totient is φ = 6315793200.

The previous prime is 20000011963. The next prime is 20000012029. The reversal of 20000012028 is 82021000002.

It is a super-2 number, since 2×20000012028² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20000011998 and 20000012016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000012029) 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, 43859448 + ... + 43859903.

It is an arithmetic number, because the mean of its divisors is an integer number (2046784880).

Almost surely, 2^20000012028 is an apocalyptic number.

It is an amenable number.

20000012028 is an abundant number, since it is smaller than the sum of its proper divisors (29122825092).

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

20000012028 is a wasteful number, since it uses less digits than its factorization.

20000012028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87719377 (or 87719375 counting only the distinct ones).

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

The spelling of 20000012028 in words is "twenty billion, twelve thousand, twenty-eight".