20920947382 has 16 divisors (see below), whose sum is σ = 32159043072. Its totient is φ = 10204298280.

The previous prime is 20920947353. The next prime is 20920947389. The reversal of 20920947382 is 28374902902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20920947389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 744094 + ... + 771697.

It is an arithmetic number, because the mean of its divisors is an integer number (2009940192).

Almost surely, 2^20920947382 is an apocalyptic number.

20920947382 is a deficient number, since it is larger than the sum of its proper divisors (11238095690).

20920947382 is a wasteful number, since it uses less digits than its factorization.

20920947382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1515963.

The product of its (nonzero) digits is 435456, while the sum is 46.

The spelling of 20920947382 in words is "twenty billion, nine hundred twenty million, nine hundred forty-seven thousand, three hundred eighty-two".