22420307 has 16 divisors (see below), whose sum is σ = 27706560. Its totient is φ = 17667072.

The previous prime is 22420291. The next prime is 22420313. The reversal of 22420307 is 70302422.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 22420307 - 2⁴ = 22420291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22420327) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 39119 + ... + 39687.

It is an arithmetic number, because the mean of its divisors is an integer number (1731660).

Almost surely, 2^22420307 is an apocalyptic number.

22420307 is a deficient number, since it is larger than the sum of its proper divisors (5286253).

22420307 is a wasteful number, since it uses less digits than its factorization.

22420307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022.

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 22420307 is about 4735.0086589150. The cubic root of 22420307 is about 281.9771077774.

Adding to 22420307 its reverse (70302422), we get a palindrome (92722729).

The spelling of 22420307 in words is "twenty-two million, four hundred twenty thousand, three hundred seven".