20500206 has 8 divisors (see below), whose sum is σ = 41000424. Its totient is φ = 6833400.

The previous prime is 20500189. The next prime is 20500217. The reversal of 20500206 is 60200502.

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

20500206 is an admirable number.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1708345 + ... + 1708356.

It is an arithmetic number, because the mean of its divisors is an integer number (5125053).

Almost surely, 2^20500206 is an apocalyptic number.

20500206 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20500206 is a wasteful number, since it uses less digits than its factorization.

20500206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3416706.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 20500206 is about 4527.7153179059. The cubic root of 20500206 is about 273.6861004710.

Adding to 20500206 its reverse (60200502), we get a palindrome (80700708).

It can be divided in two parts, 20500 and 206, that added together give a triangular number (20706 = T₂₀₃).

The spelling of 20500206 in words is "twenty million, five hundred thousand, two hundred six".