22129245 has 24 divisors (see below), whose sum is σ = 39177216. Its totient is φ = 11550048.

The previous prime is 22129213. The next prime is 22129273. The reversal of 22129245 is 54292122.

It is a happy number.

It is not a de Polignac number, because 22129245 - 2⁵ = 22129213 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 3117 + ... + 7346.

It is an arithmetic number, because the mean of its divisors is an integer number (1632384).

Almost surely, 2^22129245 is an apocalyptic number.

It is an amenable number.

22129245 is a deficient number, since it is larger than the sum of its proper divisors (17047971).

22129245 is a wasteful number, since it uses less digits than its factorization.

22129245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10521 (or 10518 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 22129245 is about 4704.1731473236. The cubic root of 22129245 is about 280.7515735151.

The spelling of 22129245 in words is "twenty-two million, one hundred twenty-nine thousand, two hundred forty-five".