20263206 has 8 divisors (see below), whose sum is σ = 40526424. Its totient is φ = 6754400.

The previous prime is 20263193. The next prime is 20263219. The reversal of 20263206 is 60236202.

It is an interprime number because it is at equal distance from previous prime (20263193) and next prime (20263219).

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

20263206 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1688595 + ... + 1688606.

It is an arithmetic number, because the mean of its divisors is an integer number (5065803).

Almost surely, 2^20263206 is an apocalyptic number.

20263206 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.

20263206 is a wasteful number, since it uses less digits than its factorization.

20263206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3377206.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 20263206 is about 4501.4670941816. The cubic root of 20263206 is about 272.6273276407.

Adding to 20263206 its reverse (60236202), we get a palindrome (80499408).

The spelling of 20263206 in words is "twenty million, two hundred sixty-three thousand, two hundred six".