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144381471 = 3133702089
BaseRepresentation
bin10001001101100…
…01011000011111
3101001200100010220
420212301120133
5243430201341
622154332423
73402136143
oct1046613037
9331610126
10144381471
1174554a33
124042a113
1323bb2730
1415265223
15ca1ea66
hex89b161f

144381471 has 8 divisors (see below), whose sum is σ = 207317040. Its totient is φ = 88850112.

The previous prime is 144381467. The next prime is 144381491. The reversal of 144381471 is 174183441.

144381471 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 144381471 - 22 = 144381467 is a prime.

It is a super-3 number, since 3×1443814713 (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144381431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1851006 + ... + 1851083.

It is an arithmetic number, because the mean of its divisors is an integer number (25914630).

Almost surely, 2144381471 is an apocalyptic number.

144381471 is a deficient number, since it is larger than the sum of its proper divisors (62935569).

144381471 is a wasteful number, since it uses less digits than its factorization.

144381471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3702105.

The product of its digits is 10752, while the sum is 33.

The square root of 144381471 is about 12015.8841122907. The cubic root of 144381471 is about 524.6107118672.

The spelling of 144381471 in words is "one hundred forty-four million, three hundred eighty-one thousand, four hundred seventy-one".

Divisors: 1 3 13 39 3702089 11106267 48127157 144381471