22470145 has 8 divisors (see below), whose sum is σ = 27473256. Its totient is φ = 17636736.

The previous prime is 22470127. The next prime is 22470187. The reversal of 22470145 is 54107422.

It can be written as a sum of positive squares in 4 ways, for example, as 8898289 + 13571856 = 2983^2 + 3684^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22470145 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42132 + ... + 42661.

It is an arithmetic number, because the mean of its divisors is an integer number (3434157).

Almost surely, 2^22470145 is an apocalyptic number.

It is an amenable number.

22470145 is a deficient number, since it is larger than the sum of its proper divisors (5003111).

22470145 is an equidigital number, since it uses as much as digits as its factorization.

22470145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84851.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 22470145 is about 4740.2684523136. The cubic root of 22470145 is about 282.1858883711.

Adding to 22470145 its reverse (54107422), we get a palindrome (76577567).

The spelling of 22470145 in words is "twenty-two million, four hundred seventy thousand, one hundred forty-five".