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144782428 = 22730716843
BaseRepresentation
bin10001010000100…
…11010001011100
3101002102201011011
420220103101130
5244031014203
622211105004
73405426130
oct1050232134
9332381134
10144782428
11747a91aa
12405a2164
1323cc309b
141532b3c0
15ca9d76d
hex8a1345c

144782428 has 24 divisors (see below), whose sum is σ = 290525312. Its totient is φ = 61843824.

The previous prime is 144782383. The next prime is 144782453. The reversal of 144782428 is 824287441.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175 + ... + 17017.

Almost surely, 2144782428 is an apocalyptic number.

It is an amenable number.

144782428 is an abundant number, since it is smaller than the sum of its proper divisors (145742884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

144782428 is a wasteful number, since it uses less digits than its factorization.

144782428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17161 (or 17159 counting only the distinct ones).

The product of its digits is 114688, while the sum is 40.

The square root of 144782428 is about 12032.5570017349. The cubic root of 144782428 is about 525.0958893634.

The spelling of 144782428 in words is "one hundred forty-four million, seven hundred eighty-two thousand, four hundred twenty-eight".

Divisors: 1 2 4 7 14 28 307 614 1228 2149 4298 8596 16843 33686 67372 117901 235802 471604 5170801 10341602 20683204 36195607 72391214 144782428