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230221132 = 22163735159
BaseRepresentation
bin11011011100011…
…10010101001100
3121001012110000121
431232032111030
5432414034012
634502234324
75463563431
oct1556162514
9531173017
10230221132
11108a545a9
12651259a4
1338908b2b
142280bb88
1515328a07
hexdb8e54c

230221132 has 12 divisors (see below), whose sum is σ = 403144560. Its totient is φ = 115036976.

The previous prime is 230221091. The next prime is 230221133. The reversal of 230221132 is 231122032.

It is a super-2 number, since 2×2302211322 = 106003539238722848, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (230221133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11032 + ... + 24127.

It is an arithmetic number, because the mean of its divisors is an integer number (33595380).

Almost surely, 2230221132 is an apocalyptic number.

It is an amenable number.

230221132 is a deficient number, since it is larger than the sum of its proper divisors (172923428).

230221132 is a wasteful number, since it uses less digits than its factorization.

230221132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36800 (or 36798 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 230221132 is about 15173.0396427347. The cubic root of 230221132 is about 612.8888610523. Note that the first 4 decimals are identical.

Adding to 230221132 its reverse (231122032), we get a palindrome (461343164).

The spelling of 230221132 in words is "two hundred thirty million, two hundred twenty-one thousand, one hundred thirty-two".

Divisors: 1 2 4 1637 3274 6548 35159 70318 140636 57555283 115110566 230221132