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22430023 = 711291299
BaseRepresentation
bin101010110010…
…0000101000111
31120012120012121
41111210011013
521220230043
62120430411
7361436440
oct125440507
946176177
1022430023
1111730010
127618407
134854505
142d9c2c7
151e80ded
hex1564147

22430023 has 8 divisors (see below), whose sum is σ = 27964800. Its totient is φ = 17477880.

The previous prime is 22429999. The next prime is 22430041. The reversal of 22430023 is 32003422.

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

It is a de Polignac number, because none of the positive numbers 2k-22430023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22429979 and 22430006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22430323) 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, 145573 + ... + 145726.

It is an arithmetic number, because the mean of its divisors is an integer number (3495600).

Almost surely, 222430023 is an apocalyptic number.

22430023 is a deficient number, since it is larger than the sum of its proper divisors (5534777).

22430023 is a wasteful number, since it uses less digits than its factorization.

22430023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291317.

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 22430023 is about 4736.0345226782. The cubic root of 22430023 is about 282.0178341587.

Adding to 22430023 its reverse (32003422), we get a palindrome (54433445).

The spelling of 22430023 in words is "twenty-two million, four hundred thirty thousand, twenty-three".

Divisors: 1 7 11 77 291299 2039093 3204289 22430023