20707722 has 48 divisors (see below), whose sum is σ = 51667200. Its totient is φ = 5871456.

The previous prime is 20707699. The next prime is 20707723. The reversal of 20707722 is 22770702.

It is not an unprimeable number, because it can be changed into a prime (20707723) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18223 + ... + 19325.

It is an arithmetic number, because the mean of its divisors is an integer number (1076400).

Almost surely, 2^20707722 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20707722, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25833600).

20707722 is an abundant number, since it is smaller than the sum of its proper divisors (30959478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20707722 is a wasteful number, since it uses less digits than its factorization.

20707722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1267 (or 1264 counting only the distinct ones).

The product of its (nonzero) digits is 2744, while the sum is 27.

The square root of 20707722 is about 4550.5738099717. The cubic root of 20707722 is about 274.6064762564.

The spelling of 20707722 in words is "twenty million, seven hundred seven thousand, seven hundred twenty-two".