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144204890 = 2515319419
BaseRepresentation
bin10001001100001…
…10010001011010
3101001100100220212
420212012101122
5243404024030
622150451122
73400502264
oct1046062132
9331310825
10144204890
11744442a5
1240363aa2
1323b5024b
141521ab34
15c9d7595
hex898645a

144204890 has 16 divisors (see below), whose sum is σ = 259765920. Its totient is φ = 57638160.

The previous prime is 144204877. The next prime is 144204899. The reversal of 144204890 is 98402441.

It is not an unprimeable number, because it can be changed into a prime (144204899) by changing a digit.

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, 10601 + ... + 20019.

It is an arithmetic number, because the mean of its divisors is an integer number (16235370).

Almost surely, 2144204890 is an apocalyptic number.

144204890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

144204890 is a deficient number, since it is larger than the sum of its proper divisors (115561030).

144204890 is a wasteful number, since it uses less digits than its factorization.

144204890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10957.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 144204890 is about 12008.5340487505. The cubic root of 144204890 is about 524.3967553385.

The spelling of 144204890 in words is "one hundred forty-four million, two hundred four thousand, eight hundred ninety".

Divisors: 1 2 5 10 1531 3062 7655 9419 15310 18838 47095 94190 14420489 28840978 72102445 144204890