22258145 has 48 divisors (see below), whose sum is σ = 34152192. Its totient is φ = 13628160.

The previous prime is 22258141. The next prime is 22258169. The reversal of 22258145 is 54185222.

It is not a de Polignac number, because 22258145 - 2² = 22258141 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22258141) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 313460 + ... + 313530.

It is an arithmetic number, because the mean of its divisors is an integer number (711504).

Almost surely, 2^22258145 is an apocalyptic number.

It is an amenable number.

22258145 is a deficient number, since it is larger than the sum of its proper divisors (11894047).

22258145 is a wasteful number, since it uses less digits than its factorization.

22258145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162 (or 149 counting only the distinct ones).

The product of its digits is 6400, while the sum is 29.

The square root of 22258145 is about 4717.8538553033. The cubic root of 22258145 is about 281.2956324312.

The spelling of 22258145 in words is "twenty-two million, two hundred fifty-eight thousand, one hundred forty-five".