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23636125 = 531731093
BaseRepresentation
bin101101000101…
…0100010011101
31122110211200001
41122022202131
522022324000
62202334301
7404621662
oct132124235
948424601
1023636125
1112384197
127aba391
134b87496
1431d3a69
15211d46a
hex168a89d

23636125 has 16 divisors (see below), whose sum is σ = 29695536. Its totient is φ = 18782400.

The previous prime is 23636099. The next prime is 23636147. The reversal of 23636125 is 52163632.

It can be written as a sum of positive squares in 8 ways, for example, as 26244 + 23609881 = 162^2 + 4859^2 .

It is not a de Polignac number, because 23636125 - 211 = 23634077 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23636093 and 23636102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21079 + ... + 22171.

It is an arithmetic number, because the mean of its divisors is an integer number (1855971).

Almost surely, 223636125 is an apocalyptic number.

23636125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23636125 is a deficient number, since it is larger than the sum of its proper divisors (6059411).

23636125 is a wasteful number, since it uses less digits than its factorization.

23636125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1281 (or 1271 counting only the distinct ones).

The product of its digits is 6480, while the sum is 28.

The square root of 23636125 is about 4861.6998056235. The cubic root of 23636125 is about 286.9847102620.

Adding to 23636125 its reverse (52163632), we get a palindrome (75799757).

The spelling of 23636125 in words is "twenty-three million, six hundred thirty-six thousand, one hundred twenty-five".

Divisors: 1 5 25 125 173 865 1093 4325 5465 21625 27325 136625 189089 945445 4727225 23636125