22309145 has 8 divisors (see below), whose sum is σ = 26797056. Its totient is φ = 17829936.

The previous prime is 22309141. The next prime is 22309153. The reversal of 22309145 is 54190322.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22309145 - 2² = 22309141 is a prime.

It is a super-3 number, since 3×22309145³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22309141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6974 + ... + 9656.

It is an arithmetic number, because the mean of its divisors is an integer number (3349632).

Almost surely, 2^22309145 is an apocalyptic number.

It is an amenable number.

22309145 is a deficient number, since it is larger than the sum of its proper divisors (4487911).

22309145 is a wasteful number, since it uses less digits than its factorization.

22309145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4351.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 22309145 is about 4723.2557627128. The cubic root of 22309145 is about 281.5103124078.

Adding to 22309145 its reverse (54190322), we get a palindrome (76499467).

The spelling of 22309145 in words is "twenty-two million, three hundred nine thousand, one hundred forty-five".