20207722 has 16 divisors (see below), whose sum is σ = 32371200. Its totient is φ = 9439920.

The previous prime is 20207683. The next prime is 20207723. The reversal of 20207722 is 22770202.

It is a junction number, because it is equal to n+sod(n) for n = 20207693 and 20207702.

It is not an unprimeable number, because it can be changed into a prime (20207723) 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 in 7 ways as a sum of consecutive naturals, for example, 3822 + ... + 7417.

It is an arithmetic number, because the mean of its divisors is an integer number (2023200).

Almost surely, 2^20207722 is an apocalyptic number.

20207722 is a deficient number, since it is larger than the sum of its proper divisors (12163478).

20207722 is a wasteful number, since it uses less digits than its factorization.

20207722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11301.

The product of its (nonzero) digits is 784, while the sum is 22.

The square root of 20207722 is about 4495.2999899895. The cubic root of 20207722 is about 272.3782673171.

Adding to 20207722 its reverse (22770202), we get a palindrome (42977924).

The spelling of 20207722 in words is "twenty million, two hundred seven thousand, seven hundred twenty-two".