20662383 has 8 divisors (see below), whose sum is σ = 31485568. Its totient is φ = 11807064.

The previous prime is 20662381. The next prime is 20662393. The reversal of 20662383 is 38326602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20662383 - 2¹ = 20662381 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20662383.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20662381) 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, 491941 + ... + 491982.

It is an arithmetic number, because the mean of its divisors is an integer number (3935696).

Almost surely, 2^20662383 is an apocalyptic number.

20662383 is a deficient number, since it is larger than the sum of its proper divisors (10823185).

20662383 is an equidigital number, since it uses as much as digits as its factorization.

20662383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983933.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 20662383 is about 4545.5894007268. The cubic root of 20662383 is about 274.4059153145.

Adding to 20662383 its reverse (38326602), we get a palindrome (58988985).

The spelling of 20662383 in words is "twenty million, six hundred sixty-two thousand, three hundred eighty-three".