20206715328 has 112 divisors (see below), whose sum is σ = 59439312160. Its totient is φ = 6731569152.

The previous prime is 20206715227. The next prime is 20206715329. The reversal of 20206715328 is 82351760202.

It is a super-2 number, since 2×20206715328² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 20206715292 and 20206715301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20206715329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4934850 + ... + 4938942.

Almost surely, 2^20206715328 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 20206715328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29719656080).

20206715328 is an abundant number, since it is smaller than the sum of its proper divisors (39232596832).

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

20206715328 is a wasteful number, since it uses less digits than its factorization.

20206715328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6971 (or 6955 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The spelling of 20206715328 in words is "twenty billion, two hundred six million, seven hundred fifteen thousand, three hundred twenty-eight".