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23690232 = 233436559
BaseRepresentation
bin101101001011…
…1101111111000
31122120120220000
41122113233320
522031041412
62203433000
7405235506
oct132275770
948516800
1023690232
1112410905
127b25760
134ba5cb7
143209676
15212e4dc
hex1697bf8

23690232 has 40 divisors (see below), whose sum is σ = 66356400. Its totient is φ = 7896528.

The previous prime is 23690221. The next prime is 23690237. The reversal of 23690232 is 23209632.

It is a super-2 number, since 2×236902322 = 1122454184427648, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 23690196 and 23690205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23690237) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 17632 + ... + 18927.

It is an arithmetic number, because the mean of its divisors is an integer number (1658910).

Almost surely, 223690232 is an apocalyptic number.

It is an amenable number.

23690232 is an abundant number, since it is smaller than the sum of its proper divisors (42666168).

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

23690232 is a wasteful number, since it uses less digits than its factorization.

23690232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36577 (or 36564 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 23690232 is about 4867.2612422183. The cubic root of 23690232 is about 287.2035285347.

Adding to 23690232 its reverse (23209632), we get a palindrome (46899864).

The spelling of 23690232 in words is "twenty-three million, six hundred ninety thousand, two hundred thirty-two".

Divisors: 1 2 3 4 6 8 9 12 18 24 27 36 54 72 81 108 162 216 324 648 36559 73118 109677 146236 219354 292472 329031 438708 658062 877416 987093 1316124 1974186 2632248 2961279 3948372 5922558 7896744 11845116 23690232