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144451223 = 722790907
BaseRepresentation
bin10001001110000…
…10011010010111
3101001210212211022
420213002122113
5243434414343
622200031355
73402546410
oct1047023227
9331725738
10144451223
11745a2384
124046255b
1323c083c7
1415282807
15ca35568
hex89c2697

144451223 has 8 divisors (see below), whose sum is σ = 165816192. Its totient is φ = 123268536.

The previous prime is 144451187. The next prime is 144451231. The reversal of 144451223 is 322154441.

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

It is a cyclic number.

It is not a de Polignac number, because 144451223 - 28 = 144450967 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 144451192 and 144451201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144453223) by changing a digit.

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, 43865 + ... + 47042.

It is an arithmetic number, because the mean of its divisors is an integer number (20727024).

Almost surely, 2144451223 is an apocalyptic number.

144451223 is a deficient number, since it is larger than the sum of its proper divisors (21364969).

144451223 is an equidigital number, since it uses as much as digits as its factorization.

144451223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91141.

The product of its digits is 3840, while the sum is 26.

The square root of 144451223 is about 12018.7862531955. The cubic root of 144451223 is about 524.6951796662.

The spelling of 144451223 in words is "one hundred forty-four million, four hundred fifty-one thousand, two hundred twenty-three".

Divisors: 1 7 227 1589 90907 636349 20635889 144451223