22005704 has 48 divisors (see below), whose sum is σ = 48717900. Its totient is φ = 9289728.

The previous prime is 22005703. The next prime is 22005719. The reversal of 22005704 is 40750022.

It can be written as a sum of positive squares in 2 ways, for example, as 21996100 + 9604 = 4690^2 + 98^2 .

It is not an unprimeable number, because it can be changed into a prime (22005703) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28232 + ... + 29000.

Almost surely, 2^22005704 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 22005704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24358950).

22005704 is an abundant number, since it is smaller than the sum of its proper divisors (26712196).

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

22005704 is a wasteful number, since it uses less digits than its factorization.

22005704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862 (or 851 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 22005704 is about 4691.0237688590. The cubic root of 22005704 is about 280.2281473856.

Adding to 22005704 its reverse (40750022), we get a palindrome (62755726).

The spelling of 22005704 in words is "twenty-two million, five thousand, seven hundred four".