22002398 has 48 divisors (see below), whose sum is σ = 39070080. Its totient is φ = 9263760.

The previous prime is 22002391. The next prime is 22002433. The reversal of 22002398 is 89320022.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22002391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 328361 + ... + 328427.

It is an arithmetic number, because the mean of its divisors is an integer number (813960).

Almost surely, 2^22002398 is an apocalyptic number.

22002398 is a deficient number, since it is larger than the sum of its proper divisors (17067682).

22002398 is a wasteful number, since it uses less digits than its factorization.

22002398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173 (or 162 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 22002398 is about 4690.6713805169. The cubic root of 22002398 is about 280.2141134386.

The spelling of 22002398 in words is "twenty-two million, two thousand, three hundred ninety-eight".