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22430044 = 2272138803
BaseRepresentation
bin101010110010…
…0000101011100
31120012120020101
41111210011130
521220230134
62120430444
7361436500
oct125440534
946176211
1022430044
111173002a
127618424
134854520
142d9c300
151e80e14
hex156415c

22430044 has 36 divisors (see below), whose sum is σ = 49179144. Its totient is φ = 8872416.

The previous prime is 22430041. The next prime is 22430069. The reversal of 22430044 is 44003422.

It is a super-4 number, since 4×224300444 (a number of 31 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22430041) 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 11 ways as a sum of consecutive naturals, for example, 1854 + ... + 6949.

Almost surely, 222430044 is an apocalyptic number.

It is an amenable number.

22430044 is an abundant number, since it is smaller than the sum of its proper divisors (26749100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22430044 is a wasteful number, since it uses less digits than its factorization.

22430044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8834 (or 8825 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 22430044 is about 4736.0367397224. The cubic root of 22430044 is about 282.0179221713.

Adding to 22430044 its reverse (44003422), we get a palindrome (66433466).

The spelling of 22430044 in words is "twenty-two million, four hundred thirty thousand, forty-four".

Divisors: 1 2 4 7 13 14 26 28 49 52 91 98 182 196 364 637 1274 2548 8803 17606 35212 61621 114439 123242 228878 246484 431347 457756 801073 862694 1602146 1725388 3204292 5607511 11215022 22430044