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22159423 = 1113831867
BaseRepresentation
bin101010010001…
…0000000111111
31112200211000101
41110202000333
521133100143
62110541531
7356231506
oct124420077
945624011
1022159423
1111565780
1275078a7
13478b2b0
142d2b83d
151e2ab4d
hex152203f

22159423 has 16 divisors (see below), whose sum is σ = 26361216. Its totient is φ = 18361440.

The previous prime is 22159391. The next prime is 22159427. The reversal of 22159423 is 32495122.

It is a cyclic number.

It is not a de Polignac number, because 22159423 - 25 = 22159391 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22159391 and 22159400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22159427) 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 15 ways as a sum of consecutive naturals, for example, 10936 + ... + 12802.

It is an arithmetic number, because the mean of its divisors is an integer number (1647576).

Almost surely, 222159423 is an apocalyptic number.

22159423 is a deficient number, since it is larger than the sum of its proper divisors (4201793).

22159423 is a wasteful number, since it uses less digits than its factorization.

22159423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1974.

The product of its digits is 4320, while the sum is 28.

The square root of 22159423 is about 4707.3796320246. The cubic root of 22159423 is about 280.8791373269.

The spelling of 22159423 in words is "twenty-two million, one hundred fifty-nine thousand, four hundred twenty-three".

Divisors: 1 11 13 83 143 913 1079 1867 11869 20537 24271 154961 266981 1704571 2014493 22159423