20382440382 has 24 divisors (see below), whose sum is σ = 44258606496. Its totient is φ = 6779277216.

The previous prime is 20382440381. The next prime is 20382440383. The reversal of 20382440382 is 28304428302.

It is a happy number.

20382440382 is a `hidden beast` number, since 2 + 0 + 38 + 244 + 0 + 382 = 666.

It is an interprime number because it is at equal distance from previous prime (20382440381) and next prime (20382440383).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20382440381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1230678 + ... + 1247129.

It is an arithmetic number, because the mean of its divisors is an integer number (1844108604).

Almost surely, 2^20382440382 is an apocalyptic number.

20382440382 is an abundant number, since it is smaller than the sum of its proper divisors (23876166114).

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

20382440382 is a wasteful number, since it uses less digits than its factorization.

20382440382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2478272 (or 2478269 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 36.

Adding to 20382440382 its reverse (28304428302), we get a palindrome (48686868684).

The spelling of 20382440382 in words is "twenty billion, three hundred eighty-two million, four hundred forty thousand, three hundred eighty-two".