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144885638 = 2166743457
BaseRepresentation
bin10001010001011…
…00011110000110
3101002121221201202
420220230132012
5244042320023
622213222502
73406336052
oct1050543606
9332557652
10144885638
11748697a7
1240631a32
132402b061
1415356c62
15cabe128
hex8a2c786

144885638 has 8 divisors (see below), whose sum is σ = 217463832. Its totient is φ = 72397696.

The previous prime is 144885593. The next prime is 144885649. The reversal of 144885638 is 836588441.

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

It is a junction number, because it is equal to n+sod(n) for n = 144885592 and 144885601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18395 + ... + 25062.

It is an arithmetic number, because the mean of its divisors is an integer number (27182979).

Almost surely, 2144885638 is an apocalyptic number.

144885638 is a deficient number, since it is larger than the sum of its proper divisors (72578194).

144885638 is a wasteful number, since it uses less digits than its factorization.

144885638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45126.

The product of its digits is 737280, while the sum is 47.

The square root of 144885638 is about 12036.8450185254. The cubic root of 144885638 is about 525.2206334931.

The spelling of 144885638 in words is "one hundred forty-four million, eight hundred eighty-five thousand, six hundred thirty-eight".