22145907 has 16 divisors (see below), whose sum is σ = 33904640. Its totient is φ = 12595392.

The previous prime is 22145899. The next prime is 22145911. The reversal of 22145907 is 70954122.

It is not a de Polignac number, because 22145907 - 2³ = 22145899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22145107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2319 + ... + 7047.

It is an arithmetic number, because the mean of its divisors is an integer number (2119040).

Almost surely, 2^22145907 is an apocalyptic number.

22145907 is a deficient number, since it is larger than the sum of its proper divisors (11758733).

22145907 is a wasteful number, since it uses less digits than its factorization.

22145907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4962.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 22145907 is about 4705.9437948195. The cubic root of 22145907 is about 280.8220188941.

The spelling of 22145907 in words is "twenty-two million, one hundred forty-five thousand, nine hundred seven".