20214806 has 4 divisors (see below), whose sum is σ = 30322212. Its totient is φ = 10107402.

The previous prime is 20214791. The next prime is 20214809. The reversal of 20214806 is 60841202.

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 (20214809) by changing a digit.

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 as a sum of consecutive naturals, namely, 5053700 + ... + 5053703.

It is an arithmetic number, because the mean of its divisors is an integer number (7580553).

Almost surely, 2^20214806 is an apocalyptic number.

20214806 is a deficient number, since it is larger than the sum of its proper divisors (10107406).

20214806 is a wasteful number, since it uses less digits than its factorization.

20214806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10107405.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 20214806 is about 4496.0878550135. The cubic root of 20214806 is about 272.4100918216.

The spelling of 20214806 in words is "twenty million, two hundred fourteen thousand, eight hundred six".