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23506197 = 31113157349
BaseRepresentation
bin101100110101…
…0110100010101
31122020020102220
41121222310111
522004144242
62155452553
7403541121
oct131526425
948206386
1023506197
11122a5610
127a57159
134b402c0
14319c581
1520e4bec
hex166ad15

23506197 has 32 divisors (see below), whose sum is σ = 37161600. Its totient is φ = 13029120.

The previous prime is 23506193. The next prime is 23506199. The reversal of 23506197 is 79160532.

It is not a de Polignac number, because 23506197 - 22 = 23506193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23506193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67179 + ... + 67527.

It is an arithmetic number, because the mean of its divisors is an integer number (1161300).

Almost surely, 223506197 is an apocalyptic number.

It is an amenable number.

23506197 is a deficient number, since it is larger than the sum of its proper divisors (13655403).

23506197 is a wasteful number, since it uses less digits than its factorization.

23506197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533.

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 23506197 is about 4848.3189870305. The cubic root of 23506197 is about 286.4578912252.

The spelling of 23506197 in words is "twenty-three million, five hundred six thousand, one hundred ninety-seven".

Divisors: 1 3 11 13 33 39 143 157 349 429 471 1047 1727 2041 3839 4537 5181 6123 11517 13611 22451 49907 54793 67353 149721 164379 602723 712309 1808169 2136927 7835399 23506197