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144354623 = 721439623
BaseRepresentation
bin10001001101010…
…10110100111111
3101001121222022112
420212222310333
5243423321443
622154004235
73401664650
oct1046526477
9331558275
10144354623
1174536846
124041667b
1323ba344a
1415259527
15ca16b18
hex89aad3f

144354623 has 8 divisors (see below), whose sum is σ = 165070848. Its totient is φ = 123661944.

The previous prime is 144354619. The next prime is 144354629. The reversal of 144354623 is 326453441.

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

It is not a de Polignac number, because 144354623 - 22 = 144354619 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 144354623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144354629) 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, 10190 + ... + 19812.

It is an arithmetic number, because the mean of its divisors is an integer number (20633856).

Almost surely, 2144354623 is an apocalyptic number.

144354623 is a deficient number, since it is larger than the sum of its proper divisors (20716225).

144354623 is an equidigital number, since it uses as much as digits as its factorization.

144354623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11773.

The product of its digits is 34560, while the sum is 32.

The square root of 144354623 is about 12014.7668724782. The cubic root of 144354623 is about 524.5781924093.

The spelling of 144354623 in words is "one hundred forty-four million, three hundred fifty-four thousand, six hundred twenty-three".

Divisors: 1 7 2143 9623 15001 67361 20622089 144354623