20201382 has 24 divisors (see below), whose sum is σ = 44119296. Its totient is φ = 6680016.

The previous prime is 20201381. The next prime is 20201387. The reversal of 20201382 is 28310202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201381) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2133 + ... + 6704.

It is an arithmetic number, because the mean of its divisors is an integer number (1838304).

Almost surely, 2^20201382 is an apocalyptic number.

20201382 is an abundant number, since it is smaller than the sum of its proper divisors (23917914).

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

20201382 is a wasteful number, since it uses less digits than its factorization.

20201382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8972 (or 8969 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 20201382 is about 4494.5947537014. The cubic root of 20201382 is about 272.3497788867.

Adding to 20201382 its reverse (28310202), we get a palindrome (48511584).

The spelling of 20201382 in words is "twenty million, two hundred one thousand, three hundred eighty-two".