20020128312 has 16 divisors (see below), whose sum is σ = 50050320840. Its totient is φ = 6673376096.

The previous prime is 20020128277. The next prime is 20020128341. The reversal of 20020128312 is 21382102002.

It is a happy number.

It is a congruent number.

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, 417085983 + ... + 417086030.

Almost surely, 2^20020128312 is an apocalyptic number.

It is an amenable number.

20020128312 is an abundant number, since it is smaller than the sum of its proper divisors (30030192528).

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

20020128312 is a wasteful number, since it uses less digits than its factorization.

20020128312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834172022 (or 834172018 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The spelling of 20020128312 in words is "twenty billion, twenty million, one hundred twenty-eight thousand, three hundred twelve".