22398242 has 4 divisors (see below), whose sum is σ = 33597366. Its totient is φ = 11199120.

The previous prime is 22398239. The next prime is 22398247. The reversal of 22398242 is 24289322.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12967201 + 9431041 = 3601^2 + 3071^2 .

It is a super-3 number, since 3×22398242³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22398199 and 22398208.

It is not an unprimeable number, because it can be changed into a prime (22398247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5599559 + ... + 5599562.

Almost surely, 2^22398242 is an apocalyptic number.

22398242 is a deficient number, since it is larger than the sum of its proper divisors (11199124).

22398242 is a wasteful number, since it uses less digits than its factorization.

22398242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11199123.

The product of its digits is 13824, while the sum is 32.

The square root of 22398242 is about 4732.6781001881. The cubic root of 22398242 is about 281.8845745949.

The spelling of 22398242 in words is "twenty-two million, three hundred ninety-eight thousand, two hundred forty-two".