22398550 has 24 divisors (see below), whose sum is σ = 43474896. Its totient is φ = 8569440.

The previous prime is 22398547. The next prime is 22398557. The reversal of 22398550 is 5589322.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22398557) 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, 8589 + ... + 10888.

It is an arithmetic number, because the mean of its divisors is an integer number (1811454).

Almost surely, 2^22398550 is an apocalyptic number.

22398550 is a deficient number, since it is larger than the sum of its proper divisors (21076346).

22398550 is a wasteful number, since it uses less digits than its factorization.

22398550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19512 (or 19507 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 22398550 is about 4732.7106397920. The cubic root of 22398550 is about 281.8858666614.

The spelling of 22398550 in words is "twenty-two million, three hundred ninety-eight thousand, five hundred fifty".