22020307 has 4 divisors (see below), whose sum is σ = 22069800. Its totient is φ = 21970816.

The previous prime is 22020293. The next prime is 22020311. The reversal of 22020307 is 70302022.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 22020307 - 2¹¹ = 22018259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22020337) 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, 24073 + ... + 24970.

It is an arithmetic number, because the mean of its divisors is an integer number (5517450).

Almost surely, 2^22020307 is an apocalyptic number.

22020307 is a deficient number, since it is larger than the sum of its proper divisors (49493).

22020307 is an equidigital number, since it uses as much as digits as its factorization.

22020307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49492.

The product of its (nonzero) digits is 168, while the sum is 16.

The square root of 22020307 is about 4692.5799939905. The cubic root of 22020307 is about 280.2901202083.

Adding to 22020307 its reverse (70302022), we get a palindrome (92322329).

The spelling of 22020307 in words is "twenty-two million, twenty thousand, three hundred seven".