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232643142 = 23261211879
BaseRepresentation
bin11011101110111…
…01101001000110
3121012202111101200
431313131221012
5434024040032
635030203330
75523301614
oct1567355106
9535674350
10232643142
1110a359266
1265ab3546
1339276384
1422c7c6b4
151565647c
hexdddda46

232643142 has 24 divisors (see below), whose sum is σ = 512325840. Its totient is φ = 76276080.

The previous prime is 232643141. The next prime is 232643149. The reversal of 232643142 is 241346232.

232643142 is a `hidden beast` number, since 2 + 3 + 2 + 643 + 14 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232643141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 104842 + ... + 107037.

It is an arithmetic number, because the mean of its divisors is an integer number (21346910).

Almost surely, 2232643142 is an apocalyptic number.

232643142 is an abundant number, since it is smaller than the sum of its proper divisors (279682698).

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

232643142 is a wasteful number, since it uses less digits than its factorization.

232643142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211948 (or 211945 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

The square root of 232643142 is about 15252.6437708353. The cubic root of 232643142 is about 615.0306389653.

Adding to 232643142 its reverse (241346232), we get a palindrome (473989374).

The spelling of 232643142 in words is "two hundred thirty-two million, six hundred forty-three thousand, one hundred forty-two".

Divisors: 1 2 3 6 9 18 61 122 183 366 549 1098 211879 423758 635637 1271274 1906911 3813822 12924619 25849238 38773857 77547714 116321571 232643142