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144081454 = 21129534261
BaseRepresentation
bin10001001011010…
…00001000101110
3101001010002121011
420211220020232
5243341101304
622144055434
73366446356
oct1045501056
9331102534
10144081454
117436a590
124030457a
1323b08cca
14151c7b66
15c9b0c04
hex896822e

144081454 has 32 divisors (see below), whose sum is σ = 248559840. Its totient is φ = 62025600.

The previous prime is 144081403. The next prime is 144081463. The reversal of 144081454 is 454180441.

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 15 ways as a sum of consecutive naturals, for example, 31684 + ... + 35944.

It is an arithmetic number, because the mean of its divisors is an integer number (7767495).

Almost surely, 2144081454 is an apocalyptic number.

144081454 is a deficient number, since it is larger than the sum of its proper divisors (104478386).

144081454 is a wasteful number, since it uses less digits than its factorization.

144081454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4356.

The product of its (nonzero) digits is 10240, while the sum is 31.

The square root of 144081454 is about 12003.3934368578. The cubic root of 144081454 is about 524.2470888567.

The spelling of 144081454 in words is "one hundred forty-four million, eighty-one thousand, four hundred fifty-four".

Divisors: 1 2 11 22 29 53 58 106 319 583 638 1166 1537 3074 4261 8522 16907 33814 46871 93742 123569 225833 247138 451666 1359259 2484163 2718518 4968326 6549157 13098314 72040727 144081454