20041728390 has 96 divisors (see below), whose sum is σ = 54911450880. Its totient is φ = 5057598528.

The previous prime is 20041728379. The next prime is 20041728461. The reversal of 20041728390 is 9382714002.

20041728390 is a `hidden beast` number, since 200 + 41 + 7 + 28 + 390 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1674969 + ... + 1686891.

It is an arithmetic number, because the mean of its divisors is an integer number (571994280).

Almost surely, 2^20041728390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20041728390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27455725440).

20041728390 is an abundant number, since it is smaller than the sum of its proper divisors (34869722490).

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

20041728390 is a wasteful number, since it uses less digits than its factorization.

20041728390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12938 (or 12935 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The spelling of 20041728390 in words is "twenty billion, forty-one million, seven hundred twenty-eight thousand, three hundred ninety".