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23805023 = 1123372543
BaseRepresentation
bin101101011001…
…1110001011111
31122210102100112
41122303301133
522043230043
62210120235
7406224254
oct132636137
948712315
1023805023
111248a080
127b8007b
134c16318
14323942b
152153518
hex16b3c5f

23805023 has 16 divisors (see below), whose sum is σ = 27841536. Its totient is φ = 20132640.

The previous prime is 23805017. The next prime is 23805029. The reversal of 23805023 is 32050832.

It is an interprime number because it is at equal distance from previous prime (23805017) and next prime (23805029).

It is not a de Polignac number, because 23805023 - 222 = 19610719 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23805023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23805029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8090 + ... + 10632.

It is an arithmetic number, because the mean of its divisors is an integer number (1740096).

Almost surely, 223805023 is an apocalyptic number.

23805023 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

23805023 is a deficient number, since it is larger than the sum of its proper divisors (4036513).

23805023 is a wasteful number, since it uses less digits than its factorization.

23805023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2614.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 23805023 is about 4879.0391472092. The cubic root of 23805023 is about 287.6666627878. Note that the first 5 decimals are identical.

Adding to 23805023 its reverse (32050832), we get a palindrome (55855855).

The spelling of 23805023 in words is "twenty-three million, eight hundred five thousand, twenty-three".

Divisors: 1 11 23 37 253 407 851 2543 9361 27973 58489 94091 643379 1035001 2164093 23805023