22708736 has 40 divisors (see below), whose sum is σ = 48060540. Its totient is φ = 10682368.

The previous prime is 22708729. The next prime is 22708747. The reversal of 22708736 is 63780722.

It can be written as a sum of positive squares in 2 ways, for example, as 22278400 + 430336 = 4720^2 + 656^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22708696 and 22708705.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7400 + ... + 10008.

Almost surely, 2^22708736 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22708736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24030270).

22708736 is an abundant number, since it is smaller than the sum of its proper divisors (25351804).

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

22708736 is an equidigital number, since it uses as much as digits as its factorization.

22708736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2644 (or 2628 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 22708736 is about 4765.3684012886. The cubic root of 22708736 is about 283.1811365605.

The spelling of 22708736 in words is "twenty-two million, seven hundred eight thousand, seven hundred thirty-six".