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23288142 = 237154667
BaseRepresentation
bin101100011010…
…1100101001110
31121211011022210
41120311211032
521430210032
62151051250
7401642313
oct130654516
947734283
1023288142
11121667a9
127970b26
134a94c87
143142d0a
1520a02cc
hex163594e

23288142 has 16 divisors (see below), whose sum is σ = 47233152. Its totient is φ = 7653240.

The previous prime is 23288119. The next prime is 23288159. The reversal of 23288142 is 24188232.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 26908 + ... + 27759.

It is an arithmetic number, because the mean of its divisors is an integer number (2952072).

Almost surely, 223288142 is an apocalyptic number.

23288142 is an abundant number, since it is smaller than the sum of its proper divisors (23945010).

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

23288142 is a wasteful number, since it uses less digits than its factorization.

23288142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54743.

The product of its digits is 6144, while the sum is 30.

The square root of 23288142 is about 4825.7789008615. The cubic root of 23288142 is about 285.5693634800.

It can be divided in two parts, 23 and 288142, that multiplied together give a palindrome (6627266).

The spelling of 23288142 in words is "twenty-three million, two hundred eighty-eight thousand, one hundred forty-two".

Divisors: 1 2 3 6 71 142 213 426 54667 109334 164001 328002 3881357 7762714 11644071 23288142