22197708 has 36 divisors (see below), whose sum is σ = 60428368. Its totient is φ = 6829920.

The previous prime is 22197697. The next prime is 22197709. The reversal of 22197708 is 80779122.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (22197709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23248 + ... + 24183.

Almost surely, 2^22197708 is an apocalyptic number.

It is an amenable number.

22197708 is an abundant number, since it is smaller than the sum of its proper divisors (38230660).

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

22197708 is a wasteful number, since it uses less digits than its factorization.

22197708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47454 (or 47449 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 22197708 is about 4711.4443645235. Note that the first 3 decimals coincide. The cubic root of 22197708 is about 281.0408032506.

The spelling of 22197708 in words is "twenty-two million, one hundred ninety-seven thousand, seven hundred eight".