22208398 has 8 divisors (see below), whose sum is σ = 33442992. Its totient is φ = 11060736.

The previous prime is 22208357. The next prime is 22208411. The reversal of 22208398 is 89380222.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21090 + ... + 22117.

It is an arithmetic number, because the mean of its divisors is an integer number (4180374).

Almost surely, 2^22208398 is an apocalyptic number.

22208398 is a deficient number, since it is larger than the sum of its proper divisors (11234594).

22208398 is a wasteful number, since it uses less digits than its factorization.

22208398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43466.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 22208398 is about 4712.5786996081. The cubic root of 22208398 is about 281.0859106710.

Adding to 22208398 its product of nonzero digits (13824), we get a palindrome (22222222).

The spelling of 22208398 in words is "twenty-two million, two hundred eight thousand, three hundred ninety-eight".