20380833792 has 672 divisors, whose sum is σ = 71541746640. Its totient is φ = 5733089280.

The previous prime is 20380833779. The next prime is 20380833841. The reversal of 20380833792 is 29733808302.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 279189468 + ... + 279189540.

Almost surely, 2^20380833792 is an apocalyptic number.

20380833792 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20380833792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35770873320).

20380833792 is an abundant number, since it is smaller than the sum of its proper divisors (51160912848).

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

20380833792 is an equidigital number, since it uses as much as digits as its factorization.

20380833792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141 (or 106 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The spelling of 20380833792 in words is "twenty billion, three hundred eighty million, eight hundred thirty-three thousand, seven hundred ninety-two".