20682728154 has 96 divisors (see below), whose sum is σ = 50345216064. Its totient is φ = 6082352640.

The previous prime is 20682728153. The next prime is 20682728177. The reversal of 20682728154 is 45182728602.

It is not an unprimeable number, because it can be changed into a prime (20682728153) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1328962 + ... + 1344434.

It is an arithmetic number, because the mean of its divisors is an integer number (524429334).

Almost surely, 2^20682728154 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20682728154, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25172608032).

20682728154 is an abundant number, since it is smaller than the sum of its proper divisors (29662487910).

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

20682728154 is a wasteful number, since it uses less digits than its factorization.

20682728154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15692 (or 15689 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 45.

The spelling of 20682728154 in words is "twenty billion, six hundred eighty-two million, seven hundred twenty-eight thousand, one hundred fifty-four".