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23985087 = 3719471279
BaseRepresentation
bin101101101111…
…1101110111111
31200010120100120
41123133232333
522120010322
62214030023
7410604240
oct133375677
950116316
1023985087
11125a2395
128048313
134c7a279
143284cc7
15218ba5c
hex16dfbbf

23985087 has 32 divisors (see below), whose sum is σ = 39321600. Its totient is φ = 12698208.

The previous prime is 23985061. The next prime is 23985089. The reversal of 23985087 is 78058932.

It is not a de Polignac number, because 23985087 - 26 = 23985023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23985089) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18114 + ... + 19392.

It is an arithmetic number, because the mean of its divisors is an integer number (1228800).

Almost surely, 223985087 is an apocalyptic number.

23985087 is a deficient number, since it is larger than the sum of its proper divisors (15336513).

23985087 is a wasteful number, since it uses less digits than its factorization.

23985087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1355.

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 23985087 is about 4897.4571973627. The cubic root of 23985087 is about 288.3901564940.

The spelling of 23985087 in words is "twenty-three million, nine hundred eighty-five thousand, eighty-seven".

Divisors: 1 3 7 19 21 47 57 133 141 329 399 893 987 1279 2679 3837 6251 8953 18753 24301 26859 60113 72903 170107 180339 420791 510321 1142147 1262373 3426441 7995029 23985087