20206494 has 96 divisors (see below), whose sum is σ = 55710720. Its totient is φ = 5140800.

The previous prime is 20206493. The next prime is 20206577. The reversal of 20206494 is 49460202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20206493) 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 in 47 ways as a sum of consecutive naturals, for example, 84427 + ... + 84665.

It is an arithmetic number, because the mean of its divisors is an integer number (580320).

Almost surely, 2^20206494 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20206494, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27855360).

20206494 is an abundant number, since it is smaller than the sum of its proper divisors (35504226).

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

20206494 is a wasteful number, since it uses less digits than its factorization.

20206494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326 (or 323 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 20206494 is about 4495.1634008120. The cubic root of 20206494 is about 272.3727498341.

Adding to 20206494 its reverse (49460202), we get a palindrome (69666696).

The spelling of 20206494 in words is "twenty million, two hundred six thousand, four hundred ninety-four".