20806483 has 4 divisors (see below), whose sum is σ = 20821240. Its totient is φ = 20791728.

The previous prime is 20806459. The next prime is 20806507. The reversal of 20806483 is 38460802.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (20806459) and next prime (20806507).

It is a cyclic number.

It is not a de Polignac number, because 20806483 - 2²¹ = 18709331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20806433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5010 + ... + 8167.

It is an arithmetic number, because the mean of its divisors is an integer number (5205310).

Almost surely, 2^20806483 is an apocalyptic number.

20806483 is a deficient number, since it is larger than the sum of its proper divisors (14757).

20806483 is a wasteful number, since it uses less digits than its factorization.

20806483 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14756.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 20806483 is about 4561.4123909158. The cubic root of 20806483 is about 275.0423427913.

The spelling of 20806483 in words is "twenty million, eight hundred six thousand, four hundred eighty-three".