20206722 has 8 divisors (see below), whose sum is σ = 40413456. Its totient is φ = 6735572.

The previous prime is 20206721. The next prime is 20206741. The reversal of 20206722 is 22760202.

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

20206722 is an admirable number.

It is a super-2 number, since 2×20206722² = 816623227970568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20206721) 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, 1683888 + ... + 1683899.

It is an arithmetic number, because the mean of its divisors is an integer number (5051682).

Almost surely, 2^20206722 is an apocalyptic number.

20206722 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.

20206722 is a wasteful number, since it uses less digits than its factorization.

20206722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3367792.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 20206722 is about 4495.1887613314. The cubic root of 20206722 is about 272.3737742697.

Adding to 20206722 its reverse (22760202), we get a palindrome (42966924).

The spelling of 20206722 in words is "twenty million, two hundred six thousand, seven hundred twenty-two".