22706004 has 12 divisors (see below), whose sum is σ = 52980704. Its totient is φ = 7568664.

The previous prime is 22706003. The next prime is 22706009. The reversal of 22706004 is 40060722.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22706003) 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, 946072 + ... + 946095.

Almost surely, 2^22706004 is an apocalyptic number.

It is an amenable number.

22706004 is an abundant number, since it is smaller than the sum of its proper divisors (30274700).

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

22706004 is a wasteful number, since it uses less digits than its factorization.

22706004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1892174 (or 1892172 counting only the distinct ones).

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

The square root of 22706004 is about 4765.0817411667. The cubic root of 22706004 is about 283.1697799635.

Adding to 22706004 its reverse (40060722), we get a palindrome (62766726).

The spelling of 22706004 in words is "twenty-two million, seven hundred six thousand, four".