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23453145 = 35597199
BaseRepresentation
bin101100101110…
…1110111011001
31122010112200000
41121131313121
522001000040
62154403213
7403230342
oct131356731
948115600
1023453145
1112269771
127a30509
134b22101
1431870c9
1520d4130
hex165ddd9

23453145 has 48 divisors (see below), whose sum is σ = 42806400. Its totient is φ = 12317184.

The previous prime is 23453137. The next prime is 23453147. The reversal of 23453145 is 54135432.

23453145 is a `hidden beast` number, since 2 + 345 + 314 + 5 = 666.

It is not a de Polignac number, because 23453145 - 23 = 23453137 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (23453147) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 117756 + ... + 117954.

It is an arithmetic number, because the mean of its divisors is an integer number (891800).

Almost surely, 223453145 is an apocalyptic number.

It is an amenable number.

23453145 is a deficient number, since it is larger than the sum of its proper divisors (19353255).

23453145 is an equidigital number, since it uses as much as digits as its factorization.

23453145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316 (or 304 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 23453145 is about 4842.8447218551. The cubic root of 23453145 is about 286.2422231127.

Adding to 23453145 its reverse (54135432), we get a palindrome (77588577).

The spelling of 23453145 in words is "twenty-three million, four hundred fifty-three thousand, one hundred forty-five".

Divisors: 1 3 5 9 15 27 45 81 97 135 199 243 291 405 485 597 873 995 1215 1455 1791 2619 2985 4365 5373 7857 8955 13095 16119 19303 23571 26865 39285 48357 57909 80595 96515 117855 173727 241785 289545 521181 868635 1563543 2605905 4690629 7817715 23453145