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23317152 = 253242887
BaseRepresentation
bin101100011110…
…0101010100000
31121212122010020
41120330222200
521432122102
62151433440
7402123015
oct130745240
947778106
1023317152
1112186581
127985880
134aa5241
14314d70c
1520a8bbc
hex163caa0

23317152 has 24 divisors (see below), whose sum is σ = 61207776. Its totient is φ = 7772352.

The previous prime is 23317127. The next prime is 23317153. The reversal of 23317152 is 25171332.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×233171522 = 1087379154782208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (23317153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121348 + ... + 121539.

It is an arithmetic number, because the mean of its divisors is an integer number (2550324).

Almost surely, 223317152 is an apocalyptic number.

It is an amenable number.

23317152 is an abundant number, since it is smaller than the sum of its proper divisors (37890624).

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

23317152 is a wasteful number, since it uses less digits than its factorization.

23317152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242900 (or 242892 counting only the distinct ones).

The product of its digits is 1260, while the sum is 24.

The square root of 23317152 is about 4828.7836977856. The cubic root of 23317152 is about 285.6878920381.

Adding to 23317152 its reverse (25171332), we get a palindrome (48488484).

The spelling of 23317152 in words is "twenty-three million, three hundred seventeen thousand, one hundred fifty-two".

Divisors: 1 2 3 4 6 8 12 16 24 32 48 96 242887 485774 728661 971548 1457322 1943096 2914644 3886192 5829288 7772384 11658576 23317152