20168038528 has 256 divisors, whose sum is σ = 48364646400. Its totient is φ = 8275046400.

The previous prime is 20168038511. The next prime is 20168038529. The reversal of 20168038528 is 82583086102.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (20168038529) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68832750 + ... + 68833042.

It is an arithmetic number, because the mean of its divisors is an integer number (188924400).

Almost surely, 2^20168038528 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20168038528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24182323200).

20168038528 is an abundant number, since it is smaller than the sum of its proper divisors (28196607872).

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

20168038528 is a wasteful number, since it uses less digits than its factorization.

20168038528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451 (or 439 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 43.

The spelling of 20168038528 in words is "twenty billion, one hundred sixty-eight million, thirty-eight thousand, five hundred twenty-eight".