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144472248 = 233574317
BaseRepresentation
bin10001001110001…
…11100010111000
3101001211221200000
420213013202320
5243441102443
622200313000
73402664614
oct1047074270
9331757600
10144472248
1174607158
1240472760
1323c14b4b
141528a344
15ca3b8d3
hex89c78b8

144472248 has 48 divisors (see below), whose sum is σ = 405776280. Its totient is φ = 48156768.

The previous prime is 144472243. The next prime is 144472249. The reversal of 144472248 is 842274441.

144472248 is a `hidden beast` number, since 144 + 472 + 2 + 48 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144472243) 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 11 ways as a sum of consecutive naturals, for example, 35215 + ... + 39102.

Almost surely, 2144472248 is an apocalyptic number.

144472248 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

144472248 is an abundant number, since it is smaller than the sum of its proper divisors (261304032).

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

144472248 is an equidigital number, since it uses as much as digits as its factorization.

144472248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74338 (or 74322 counting only the distinct ones).

The product of its digits is 57344, while the sum is 36.

The square root of 144472248 is about 12019.6608937191. The cubic root of 144472248 is about 524.7206350431.

The spelling of 144472248 in words is "one hundred forty-four million, four hundred seventy-two thousand, two hundred forty-eight".

Divisors: 1 2 3 4 6 8 9 12 18 24 27 36 54 72 81 108 162 216 243 324 486 648 972 1944 74317 148634 222951 297268 445902 594536 668853 891804 1337706 1783608 2006559 2675412 4013118 5350824 6019677 8026236 12039354 16052472 18059031 24078708 36118062 48157416 72236124 144472248