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23030643 = 3411131657
BaseRepresentation
bin101011111011…
…0101101110011
31121100002002210
41113312231303
521343440033
62141343203
7366520506
oct127665563
947302083
1023030643
1112000299
127867b03
134a049cc
1430b713d
15204dd63
hex15f6b73

23030643 has 16 divisors (see below), whose sum is σ = 31754016. Its totient is φ = 14837760.

The previous prime is 23030639. The next prime is 23030653. The reversal of 23030643 is 34603032.

It is not a de Polignac number, because 23030643 - 22 = 23030639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23030653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13071 + ... + 14727.

It is an arithmetic number, because the mean of its divisors is an integer number (1984626).

Almost surely, 223030643 is an apocalyptic number.

23030643 is a deficient number, since it is larger than the sum of its proper divisors (8723373).

23030643 is a wasteful number, since it uses less digits than its factorization.

23030643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1814.

The product of its (nonzero) digits is 1296, while the sum is 21.

The square root of 23030643 is about 4799.0252135199. The cubic root of 23030643 is about 284.5129384829.

Adding to 23030643 its reverse (34603032), we get a palindrome (57633675).

The spelling of 23030643 in words is "twenty-three million, thirty thousand, six hundred forty-three".

Divisors: 1 3 41 113 123 339 1657 4633 4971 13899 67937 187241 203811 561723 7676881 23030643