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23107986 = 23211116707
BaseRepresentation
bin101100000100…
…1100110010010
31121111000012100
41120021212102
521403423421
62143141230
7400262136
oct130114622
947430170
1023107986
1112053410
1278a4816
134a30c85
1430d73c6
152066c26
hex1609992

23107986 has 24 divisors (see below), whose sum is σ = 54619344. Its totient is φ = 7002360.

The previous prime is 23107967. The next prime is 23107991. The reversal of 23107986 is 68970132.

It is a self number, because there is not a number n which added to its sum of digits gives 23107986.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58156 + ... + 58551.

It is an arithmetic number, because the mean of its divisors is an integer number (2275806).

Almost surely, 223107986 is an apocalyptic number.

23107986 is an abundant number, since it is smaller than the sum of its proper divisors (31511358).

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

23107986 is a wasteful number, since it uses less digits than its factorization.

23107986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116726 (or 116723 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 23107986 is about 4807.0766584277. The cubic root of 23107986 is about 284.8310725603.

It can be divided in two parts, 2310 and 7986, that added together give a triangular number (10296 = T143).

The spelling of 23107986 in words is "twenty-three million, one hundred seven thousand, nine hundred eighty-six".

Divisors: 1 2 3 6 9 11 18 22 33 66 99 198 116707 233414 350121 700242 1050363 1283777 2100726 2567554 3851331 7702662 11553993 23107986