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144771230 = 2519375011
BaseRepresentation
bin10001010000100…
…00100010011110
3101002102010210102
420220100202132
5244030134410
622210541102
73405351362
oct1050204236
9332363712
10144771230
11747a084a
1240597792
1323cbac66
14153272a2
15ca9a2a5
hex8a1089e

144771230 has 16 divisors (see below), whose sum is σ = 261941904. Its totient is φ = 57607680.

The previous prime is 144771229. The next prime is 144771251. The reversal of 144771230 is 32177441.

It is a junction number, because it is equal to n+sod(n) for n = 144771193 and 144771202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35576 + ... + 39435.

It is an arithmetic number, because the mean of its divisors is an integer number (16371369).

Almost surely, 2144771230 is an apocalyptic number.

144771230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

144771230 is a deficient number, since it is larger than the sum of its proper divisors (117170674).

144771230 is a wasteful number, since it uses less digits than its factorization.

144771230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75211.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 144771230 is about 12032.0916718582. The cubic root of 144771230 is about 525.0823514052.

The spelling of 144771230 in words is "one hundred forty-four million, seven hundred seventy-one thousand, two hundred thirty".

Divisors: 1 2 5 10 193 386 965 1930 75011 150022 375055 750110 14477123 28954246 72385615 144771230