20650382 has 4 divisors (see below), whose sum is σ = 30975576. Its totient is φ = 10325190.

The previous prime is 20650381. The next prime is 20650387. The reversal of 20650382 is 28305602.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20650381) by changing a digit.

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 as a sum of consecutive naturals, namely, 5162594 + ... + 5162597.

It is an arithmetic number, because the mean of its divisors is an integer number (7743894).

Almost surely, 2^20650382 is an apocalyptic number.

20650382 is a deficient number, since it is larger than the sum of its proper divisors (10325194).

20650382 is a wasteful number, since it uses less digits than its factorization.

20650382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10325193.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 20650382 is about 4544.2691381563. The cubic root of 20650382 is about 274.3527787657.

Adding to 20650382 its reverse (28305602), we get a palindrome (48955984).

The spelling of 20650382 in words is "twenty million, six hundred fifty thousand, three hundred eighty-two".