22197008 has 10 divisors (see below), whose sum is σ = 43006734. Its totient is φ = 11098496.

The previous prime is 22196971. The next prime is 22197013. The reversal of 22197008 is 80079122.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11751184 + 10445824 = 3428^2 + 3232^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 693641 + ... + 693672.

Almost surely, 2^22197008 is an apocalyptic number.

It is an amenable number.

22197008 is a deficient number, since it is larger than the sum of its proper divisors (20809726).

22197008 is a wasteful number, since it uses less digits than its factorization.

22197008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1387321 (or 1387315 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 22197008 is about 4711.3700767399. The cubic root of 22197008 is about 281.0378490323.

The spelling of 22197008 in words is "twenty-two million, one hundred ninety-seven thousand, eight".